News for hackers. Stuff that matters.
Re:DNS traffic can leak outside the VPN tunnel on Android by nazgulsenpai on Friday May 03, 2024 @10:01AM (#40247762)
I don't use Mullvad, but I respect the shit out of them. This is a good, information dense explanation of the problem, their short term workaround and potential workarounds for others, as well as what will need to be fixed in Android. Good stuff.
Re:DNS traffic can leak outside the VPN tunnel on Android by pqdbr on Friday May 03, 2024 @10:30AM (#40248095)
Blog posts like this (instead of endless YouTube sponsorships like their competitors do) are what made me choose them as my VPN service.
Re:DNS traffic can leak outside the VPN tunnel on Android by uneekname on Friday May 03, 2024 @12:21PM (#40249403)
I was a bit surprised to walk onto a DC Metro car last weekend to find the walls plastered with ads for Mullvad. Just wanted to note that Mullvad is spending money on traditional advertising, as well as blog posts like this.
Re:DNS traffic can leak outside the VPN tunnel on Android by watermelon0 on Friday May 03, 2024 @12:35PM (#40249542)
FYI they are transparent about buying outdoor ads: https://mullvad.net/en/help/policy-reviews-advertising-and-a...
Re:DNS traffic can leak outside the VPN tunnel on Android by readyman on Friday May 03, 2024 @04:18PM (#40251929)
The ads themselves make the buying pretty transparent
Re:DNS traffic can leak outside the VPN tunnel on Android by the_du_ on Friday May 03, 2024 @07:55PM (#40253611)
XD
Re:DNS traffic can leak outside the VPN tunnel on Android by shantara on Friday May 03, 2024 @04:06PM (#40251790)
Mullvad's "Stop chat control" ads have been all over Stockholm a few months ago, including this giant banner in the airport. This is the kind of advertising I respect.

https://mastodon.online/@mullvadnet/109959480069637837

Re:DNS traffic can leak outside the VPN tunnel on Android by bragr on Friday May 03, 2024 @01:49PM (#40250327)
I was surprised this week to see a big yellow Mullvad ad on LA Metro bus. They must be on an advertising push.
Re:DNS traffic can leak outside the VPN tunnel on Android by zevra on Friday May 03, 2024 @03:34PM (#40251414)
I saw them on metro north going into nyc
Re:DNS traffic can leak outside the VPN tunnel on Android by SpaceManNabs on Friday May 03, 2024 @02:37PM (#40250821)
I saw mullvad vpn ads on the L train (nyc) this week!
Re:DNS traffic can leak outside the VPN tunnel on Android by bloopernova on Friday May 03, 2024 @10:35AM (#40248149)
I use and recommend Mullvad.

However I'm worried that their goodwill and values will become more valuable to some private equity corp that buys them to asset strip and squeeze their customers.

Re:DNS traffic can leak outside the VPN tunnel on Android by input_sh on Friday May 03, 2024 @10:39AM (#40248208)
Why do you think they'd accept an offer? They openly said it's not for sale: https://mullvad.net/en/blog/2021/9/16/ownership-and-future-m...

Not everyone's in it for the money. Assuming they're not operating at a loss, even less so.

Re:DNS traffic can leak outside the VPN tunnel on Android by selectodude on Friday May 03, 2024 @11:35AM (#40248880)
There are billboards for Mullvad all over Chicago which kind of weird me out.
Re:DNS traffic can leak outside the VPN tunnel on Android by ziddoap on Friday May 03, 2024 @11:53AM (#40249093)
They do traditional advertising (billboards being one example) instead of paid reviews, affiliate/influencer advertising, etc.

https://mullvad.net/en/help/policy-reviews-advertising-and-a...

Re:DNS traffic can leak outside the VPN tunnel on Android by neuronexmachina on Friday May 03, 2024 @01:34PM (#40250172)
Oh wow, I wish more companies had pages like that summarizing what sort of marketing/advertising they do/don't use.
Re:DNS traffic can leak outside the VPN tunnel on Android by ziddoap on Friday May 03, 2024 @01:39PM (#40250223)
I’m fanboying at this point, but I honestly believe Mullvad should be the poster child for a lot of things other companies should be doing. Transparency, accountability, data minimization, thorough documentation, publicly available audits, etc.
Re:DNS traffic can leak outside the VPN tunnel on Android by hughesjj on Friday May 03, 2024 @02:37PM (#40250812)
I've been a happy expressvpn customer since dec 2016 but I'm sincerely considering switching to mullvad at this point
[dead]
Re:DNS traffic can leak outside the VPN tunnel on Android by ziddoap on Friday May 03, 2024 @12:40PM (#40249588)
Holy unsubstantiated accusations, batman.

This can be instantly disproved by examining the cases where valid warrants were presented to them by LEAs and they were unable to provide any user data.

Re:DNS traffic can leak outside the VPN tunnel on Android by lambdaxyzw on Friday May 03, 2024 @12:49PM (#40249699)
Also they actually make it easy to use their services without providing any data - you can use them by paying Monero over tor, and the only thing identifying you is a short unique "identifying number" - no emails, no names, not even an account.
Re:DNS traffic can leak outside the VPN tunnel on Android by yencabulator on Friday May 03, 2024 @01:24PM (#40250044)
I find their gimmick of "buy a physical gift card from Amazon, scratch to reveal one-time code" to be pretty genius. It's just a bulk pile of cards, Amazon records you bought one but doesn't know which one (and the actual code is under a scratch-to-reveal surface).

Even if a three-letter agency intercepted your package and swapped your gift card with a known code, I believe Mullvad is not recording the connection between specific gift code and the account number.

You can also exchange unscratched gift cards with friends and strangers.

Re:DNS traffic can leak outside the VPN tunnel on Android by ziddoap on Friday May 03, 2024 @12:51PM (#40249724)
Indeed. They even accept cash via envelope -- just provide an account number to put the cash towards.
Re:DNS traffic can leak outside the VPN tunnel on Android by nick238 on Friday May 03, 2024 @03:34PM (#40251416)
I'm not saying it's substantiated at all, it just feels very sudden and too weird.
Re:DNS traffic can leak outside the VPN tunnel on Android by kfreds on Friday May 03, 2024 @01:33PM (#40250163)
It's quite simple really.

1. We launched Mullvad 15 years ago. During those 15 years people's interest and awareness of online security and privacy has grown considerably, as has the consumer VPN market.

2. Our strategy is quite different from most of our competitors'. As a result we've grown slower than several of them, but we have nevertheless continued to grow year after year.

3. The costs of the campaign are perhaps lower than you assume.

tl;dr We've slowly grown over many years and are now making enough money to plaster privacy propaganda over your city. Hopefully it's an interesting change from the usual bus ads. Enjoy!

Re:DNS traffic can leak outside the VPN tunnel on Android by kfreds on Friday May 03, 2024 @01:20PM (#40249999)
I'm sorry you feel that way, but I can relate. I initially had mixed feelings about it as well.

On the other hand the campaign we did in Stockholm last year worked out quite well. It managed to affect both domestic and EU legislative discussions at the time. Or at least our campaign contributed to moving the discussion in the right direction.

How much is that worth? I'm not sure, but the reason we started Mullvad in the first place was to conduct political action through entrepreneurship, specifically regarding mass surveillance and censorship.

If nothing else it seems to amuse a lot of people, including me and my colleagues. When I first heard of the idea of plastering privacy propaganda all over some major U.S. cities my initial reaction was more or less "lol, we can just do that?". As it turns out we can. :)

Re:DNS traffic can leak outside the VPN tunnel on Android by j0e1 on Friday May 03, 2024 @02:03PM (#40250490)
Thank you for sharing that! I am definitely part of the HN group think that tends to be irked by mass marketing- mainly because of baggage from the past of false advertising. However, I do agree that getting the non-IT geek's attention is what would actually move the needle for political action. I was amused (mostly surprised) to see a billboard while driving down the 110 in LA. More importantly, it led to a cool discussion with my non-tech wife who now appreciates your guys' brand more. :)
Re:DNS traffic can leak outside the VPN tunnel on Android by chefandy on Friday May 03, 2024 @02:29PM (#40250731)
As frustrating as it is, even great products don't sell themselves. I find much, if not most marketing for subscription-based services pretty scummy, but it's not like it has to be, and I'd much rather see physical ads than how most stuff gets surreptitiously slipped into my surveillance-capitalism-sponsored life.
Re:DNS traffic can leak outside the VPN tunnel on Android by walterbell on Friday May 03, 2024 @03:47PM (#40251583)
> plastering privacy propaganda all over some major U.S. cities

The ads are great to see in NYC subway and giant billboard near NY Times HQ.

Is there an online page with all of the ads? Maybe a video tour of the ads "in the wild" in different cities?

Re:DNS traffic can leak outside the VPN tunnel on Android by kfreds on Friday May 03, 2024 @06:01PM (#40252891)
Thanks! I don't think so unfortunately. It's a great idea though.
Re:DNS traffic can leak outside the VPN tunnel on Android by walterbell on Friday May 03, 2024 @06:35PM (#40253111)
Since there's no existing compendium, maybe a social media contest for people submitting photos of anonymized objects (e.g. in a box), books (hardback with custom cover), humans (costume/mask/etc) with Mullvad ads / billboard in the background. Crowdsource field reporting and motivate discussion about metadata in online and offline privacy.
Re:DNS traffic can leak outside the VPN tunnel on Android by gaudystead on Friday May 03, 2024 @02:54PM (#40250976)
Okay, this comment was the comment that got me sold on Mullvad. I was looking for a VPN I liked anyway and if you also use your business entity to help drive legislation toward a more privacy focused end, I'm in.
Re:DNS traffic can leak outside the VPN tunnel on Android by trelane on Friday May 03, 2024 @05:18PM (#40252491)
For me, (one of) the moments was when there figured out how to do remote attestation of the server to check that what it was running was what you expected, so you could check its privacy yourself.

Rather a neat subversion of the common corporate use of remote attestation, to preserve user privacy and security rather than curtail it.

Re:DNS traffic can leak outside the VPN tunnel on Android by kfreds on Friday May 03, 2024 @06:08PM (#40252943)
Thank you! You are of course referring to System Transparency. I feel obligated to point out that we have yet to fully implement that idea. I've been working on it, and the related projects Sigsum and Tillitis, for the past six years. There have been lots of detours, but we are making progress towards the vision outlined in the blog post I wrote in 2019: https://mullvad.net/en/blog/system-transparency-future

Two years ago we moved the OSS projects System Transparency and Sigsum to its own organization: Glasklar Teknik AB (glasklarteknik.se).

The OSS and OSHW project TKey was moved to Mullvad's other sister company Tillitis AB (tillitis.se)

Re:DNS traffic can leak outside the VPN tunnel on Android by SturgeonsLaw on Friday May 03, 2024 @06:17PM (#40252998)
Re:DNS traffic can leak outside the VPN tunnel on Android by pyinstallwoes on Friday May 03, 2024 @02:36PM (#40250808)
How did you measure the effectiveness of physical ads to issues and other key metrics? I’m just curious what it takes to measure those as it’s always been mysterious to me. It seems like it needs to include a coupon code or something? Also interesting re: legislation. How so?
Re:DNS traffic can leak outside the VPN tunnel on Android by kfreds on Friday May 03, 2024 @03:18PM (#40251242)
To my knowledge we don't measure it, at least not in the way I think you mean.

I can't speak for my marketing colleagues but I would assume they reason about it. It seems like a complex system to me, which means the approach kind of has to be (1) forming an understanding of the system and (2) deciding whether one is comfortable with the uncertainty.

One aspect that makes the cost/benefit assessment quite a bit easier is that we don't only care about how many new paying customers we get. It's also fun to do this kind of advertisement. How many interesting conversations about privacy have been had as a result of people seeing our billboards? That's worth something too.

Re:DNS traffic can leak outside the VPN tunnel on Android by nickburns on Friday May 03, 2024 @01:57PM (#40250419)
thank you for offering up in this forum at least your own personal contributions to your organization's position on its advertising campaigns. not sure if any official statements on the matter have been made elsewhere, but you've assuaged at least my own slight concern about it with this one. truly. (and by 'truly' i mean i've been meaning to stuff some cash in an envelope addressed to you guys!)

transparency is absolutely a corporate virtue.

Re:DNS traffic can leak outside the VPN tunnel on Android by dhsh on Sunday May 05, 2024 @06:20AM (#40263670)
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Re:DNS traffic can leak outside the VPN tunnel on Android by anakaine on Friday May 03, 2024 @10:17PM (#40254279)
Thank you for the service that you and the rest of the team provide. I've found it to be excellent, and you're one of only a very slim number of transparent VPN providers who seem to be in it for the right reasons.
Re:DNS traffic can leak outside the VPN tunnel on Android by starttoaster on Friday May 03, 2024 @01:39PM (#40250222)
What is it about a company spreading awareness about their product that weirds you out in particular, I'm curious? Billboard advertisements are an awareness type of advertisement. I'd be much more concerned to learn about paid endorsements, which they document on their website that they specifically do not do. Endorsements are a much more sensitive form of advertising, where once money trades hands for an endorsement, it stops being a useful third party assessment and starts being an advertisement disguised as a third party assessment. Awareness advertisements just make good business sense, so I'm genuinely curious why those would shy anybody away.
Re:DNS traffic can leak outside the VPN tunnel on Android by epcoa on Friday May 03, 2024 @01:51PM (#40250348)
I saw them on the side of a CTA bus for the first time the other day. I don’t think it is bad at all, but the initial reaction for me as an American used to typical bus advertising it was exactly as if seeing an ad for 4chan there. It just isn’t the expected modality for the product.

(Seeing the reply down thread from a Mullvad rep, this is not unexpected)

Re:DNS traffic can leak outside the VPN tunnel on Android by int_19h on Friday May 03, 2024 @03:20PM (#40251269)
I agree with you, but I also understand where GP is coming from. For the past 20 years, what people are mostly exposed to is internet ads, which are, to put it mildly, pushy. As a result, all ads now have to deal with considerable negative sentiment as a baseline simply by virtue of being ads.
Re:DNS traffic can leak outside the VPN tunnel on Android by snowwrestler on Saturday May 04, 2024 @11:17AM (#40258290)
My concern with the Mullvad ads is that some are essentially lying about what their product does. One of the ads I recall said something like:

> Imagine an ad that won’t track you after you see it

> Mullvad VPN

That’s not what a VPN does though. Tunneling my browsing does not stop sites from serving ads, setting cookies, fingerprinting browsers, etc.

Re:DNS traffic can leak outside the VPN tunnel on Android by xnyan on Saturday May 04, 2024 @02:11PM (#40259292)
> That’s not what a VPN does though.

Mullvad itself is extremely clear that use of a VPN alone is not enough for the reasons you stated. Mullvad VPN (which is what they advertised) is a suite of products and services, some of which are:

- DNS services (ads, tracking)

- A privacy-optimized browser (cookies, fingerprinting)

- Network services like multihop routing (many benefits such as resistance to timing attacks)

All of these services are included with your subscription at no additional cost. I feel like the claim of preventing ad tracking is as legitimate as it could possibly be.

Re:DNS traffic can leak outside the VPN tunnel on Android by Groxx on Friday May 03, 2024 @10:42AM (#40248249)
Not everyone telegraphs if they're in it for the money.

In some lines of business, like (purely hypothetically) security, it might actually be a bad thing for your business if you do.

I also use mullvad because I don't really think this is the case, but bad actors are generally hard to conclusively identify by design. And VPNs are pretty far out in the "just trust me bro" realm of handing over all your browsing habits with no ability to check their real behavior.

Re:DNS traffic can leak outside the VPN tunnel on Android by reaperman on Friday May 03, 2024 @10:50AM (#40248340)
I think legally they would have to change their ownership directive document in Switzerland to allow the board of directors to allow the two founders to sell more than 50% of their shares. So you might get a heads up!
Re:DNS traffic can leak outside the VPN tunnel on Android by blowfish721 on Friday May 03, 2024 @10:59AM (#40248445)
They arent based in Switzerland but in Sweden.
Re:DNS traffic can leak outside the VPN tunnel on Android by yencabulator on Friday May 03, 2024 @01:32PM (#40250148)
Mullvad is trying pretty darn hard to be as far from "just trust me bro" as is feasible. If you do take their word for how they run their systems (/are working toward), their servers are diskless (what logs?), will only run software signed by their infrastructure team, and will remotely attest that their software has not been tampered with.

This is so very, very, far away from the typical VPN company that any such comparison sounds ridiculous to me.

Just the pretense of doing all this work costs so much that a greedy biz bro simply wouldn't.

https://github.com/mullvad/system-transparency

https://www.system-transparency.org

https://news.ycombinator.com/item?id=29903695

Re:DNS traffic can leak outside the VPN tunnel on Android by kfreds on Friday May 03, 2024 @01:48PM (#40250317)
Thank you for noticing! System Transparency is taking way longer to figure out, design and build than I expected. On the other hand the project is quite ambitious, and our work on ST has sprouted two additional OSS projects:

- https://www.sigsum.org (a transparency log with witness cosigning)

- https://tillitis.se (an open-source hardware FPGA-based security key with measured boot)

Re:DNS traffic can leak outside the VPN tunnel on Android by fragmede on Friday May 03, 2024 @03:54PM (#40251662)
> a greedy biz bro simply wouldn't.

On the other hand, if it were an NSA honeypot, doing all that work would easily be worth the cost. Personally, I don't think they are, so I'm merely pointing out that there are angles other than totally above-board honest legitimate reasons, and "greedy biz bro".

Re:DNS traffic can leak outside the VPN tunnel on Android by yencabulator on Friday May 03, 2024 @03:59PM (#40251731)
For sure. Them being Swedes with a long track record decreases that probability a lot.
Re:DNS traffic can leak outside the VPN tunnel on Android by kfreds on Friday May 03, 2024 @01:43PM (#40250266)
> VPNs are pretty far out in the "just trust me bro" realm of handing over all your browsing habits with no ability to check their real behavior.

Yes. It is quite an interesting situation, really. It's also a fun challenge! To what extent can we prove that we are trustworthy, and using what tools? Do those tools exist or do we have to invent them?

Re:DNS traffic can leak outside the VPN tunnel on Android by fragmede on Friday May 03, 2024 @04:04PM (#40251774)
You'd have to invent this one at least, as it currently doesn't exist. As the DNS server operator, you can view all my DNS queries. In a zero-trust environment where I don't trust you not to log all user queries and forwards them to the NSA, you'd need to use homomorphic encryption and create a DNS client and server than can do a lookup, without you, the DNS server operator, from finding out what the DNS lookup was of.

https://github.com/menonsamir/spiral-rs claims to have implemented this at a level that's practical for real world applications, with a demo for a wikipedia server, but it's far too slow, as demoed, for use as DNS server.

Now, the fact of the matter is that you can map my account ID back to the IP I'm connecting from, but with very limited way to map from my IP to my identity protects that in many ways, but data-mining at scale, knowing how many users connecting to one proxy server from city X, would be worth something to advertising and related companies who are more interested in large habits of users. If it turns out no one uses the pirate bay anymore, but use torrent site XYZ, I know where I'd place my advertising dollars for, say, a VPN product.

This is on the extreme end, but you asked for a fun challenge! :)

Re:DNS traffic can leak outside the VPN tunnel on Android by kfreds on Friday May 03, 2024 @05:16PM (#40252475)
Thanks! :)

I should've been more clear. The questions I posed above are rhetorical. I've spent well over half a decade obsessing over them. See my mention of System Transparency, Sigsum and Tillitis elsewhere in this thread.

Re:DNS traffic can leak outside the VPN tunnel on Android by fragmede on Saturday May 04, 2024 @12:16AM (#40254762)
Thank you for your hard work. You've spent way more time on the problem than I. Didn't realize it was rhetorical! Mostly I wanna see homophobic encryption happen in practice. :p
Re:DNS traffic can leak outside the VPN tunnel on Android by Groxx on Friday May 03, 2024 @10:12PM (#40254254)
tbh I don't think they exist. And I'm, like, half okay with that - it's entirely justified paranoia, bad actors of all skill levels undeniably exist and they hide successfully for many years, but I do believe good actors exist. It's why I chose mullvad.

At best you have stuff like attestation... but we all know those have a long history of being flawed and are subject to loads of side channels that can't be attested against. Plus VPNs are such a honeypot in every conceivable way that TONS of state-actor-level efforts are entirely reasonable, and that could easily include cheating on basically all attestation systems imaginable. We're just kinda stuck trusting history and lack of public leaks / correlated actions / whistleblowers IMO.

Or, frankly, the Mozilla partnering counts for a lot to me. I won't use their setup because it doesn't have non-vpn-app options, but they're a group I mostly trust to have people's safety at heart.

Personally, stuff like Tor (where by construction you only need to touch a couple good actors to be reasonably secure, and anyone can contribute) is about the only mostly-actually-trustworthy kind of system. You can expect malicious actors to participate there, and still have a reasonable level of privacy, particularly if you check a few personally (which is feasible because anyone can contribute). Tor and similar have plenty of issues, but structurally they're much more sound by design than any centralized VPN can ever be. Now if only they were even a tiny fraction as usable...

Re:DNS traffic can leak outside the VPN tunnel on Android by wepple on Friday May 03, 2024 @03:47PM (#40251577)
They’re in it for the money.

They’ve made some claims that are downright lies, I chuckle at the idea anyone would trust them.

The NYC subway ads state that they save you from online web ad systems; blatantly false.

I’ll take a photo next time I see the ad to store away.

Re:DNS traffic can leak outside the VPN tunnel on Android by cjaybo on Friday May 03, 2024 @04:10PM (#40251841)
> They’ve made some claims that are downright lies

Which claims are you referring to?

Re:DNS traffic can leak outside the VPN tunnel on Android by wepple on Saturday May 04, 2024 @06:34AM (#40256510)
From my above post:

> The NYC subway ads state that they save you from online web ad systems; blatantly false.

Re:DNS traffic can leak outside the VPN tunnel on Android by wepple on Wednesday May 08, 2024 @05:12PM (#40302760)
NYC subway, today: https://ibb.co/v3rdHcm
Re:DNS traffic can leak outside the VPN tunnel on Android by Rastonbury on Friday May 03, 2024 @04:16PM (#40251897)
What were the lies?
Re:DNS traffic can leak outside the VPN tunnel on Android by wepple on Saturday May 04, 2024 @06:34AM (#40256513)
From my above post:

> The NYC subway ads state that they save you from online web ad systems; blatantly false.

Re:DNS traffic can leak outside the VPN tunnel on Android by TheCraiggers on Saturday May 04, 2024 @08:24AM (#40257128)
A very cursory search online shows that it's actually your statement which is blatantly false. They've offered ad blocking for years.

While it's true they've not always offered this, it's on you when making such claims to ensure you're still factual.

Re:DNS traffic can leak outside the VPN tunnel on Android by wepple on Saturday May 04, 2024 @11:17AM (#40258289)
> They've offered ad blocking for years.

Please show me evidence to back this up and I’ll happily walk back my statements.

The “mullvad” browser is not their VPN product. And if you think DNS denylisting prevents “ad networks from spying on you”, I have some unfortunate news for you. It works to prevent the rendering of a subset of ads (especially in the browser), but isn’t worth a damn for actual behavioral analysis.

Re:DNS traffic can leak outside the VPN tunnel on Android by trelane on Saturday May 04, 2024 @02:33PM (#40259420)
https://mullvad.net/en/blog/how-set-ad-blocking-our-app

"How to set up ad blocking in our app"

Dated May 27, 2021

I would guess it started with something like this: they serve DNS to prevent DNS leaks when using the VPN. They realize they can use this to block domains, just like a pihole or Cloudflare DNS. They integrate that into their VPN offering.

It's pretty logical once you think about it, but it was a surprise to me too.

Re:DNS traffic can leak outside the VPN tunnel on Android by Rastonbury on Tuesday May 07, 2024 @09:43AM (#40285365)
It blocks almost all analytics, social pixels which likely covers 90% of the market. Between DNS blocking and uBlock, whatever behavior analysis they can do beyond that doesn't seem to work because the ads I see are entirely irrelevant
Re:DNS traffic can leak outside the VPN tunnel on Android by kfreds on Friday May 03, 2024 @05:55PM (#40252839)
A VPN is not enough for privacy. But in combination with a privacy-focused browser, you make sure to block third-party cookies and other tracking technologies used by the data collectors.

The paragraph above is clearly visible on our landing page. We don't want people using our service for things it's not designed for.

The paragraph below is also a direct quote from our website.

"When you visit a website, you can be identified and tracked through your IP address, third-party cookies, all kinds of tracking scripts, and through so called browser fingerprints. That’s why masking your IP address is not enough to stop the data collection. However, by using a trustworthy VPN in combination with a privacy-focused browser, you can put up a better resistance against the mass surveillance of today. That's why we partnered with the Tor Project to develop Mullvad Browser – a browser designed to minimize tracking and fingerprints."

Re:DNS traffic can leak outside the VPN tunnel on Android by tredre3 on Friday May 03, 2024 @08:21PM (#40253753)
Your knowledge might be a bit out of date, they do offer an ad-blocking DNS now.

I don't know if it's easily configurable in the app, though.

Re:DNS traffic can leak outside the VPN tunnel on Android by trelane on Saturday May 04, 2024 @02:32PM (#40259414)
> I don't know if it's easily configurable in the app, though.

I just discovered it by accident the other day.

It's super easy.

See "DNS content blockers" at https://mullvad.net/de/help/using-mullvad-vpn-on-android#vpn...

Re:DNS traffic can leak outside the VPN tunnel on Android by ph0ny on Friday May 03, 2024 @03:56PM (#40251692)
They are making bank. Thank you open Swedish data:

https://www.allabolag.se/5592384001/mullvad-vpn-ab

Re:DNS traffic can leak outside the VPN tunnel on Android by radicality on Friday May 03, 2024 @11:39AM (#40248922)
I’ve been using and still using Mullvad but also getting worried. I live in nyc and in the last few months I’ve seen a _lot_ of ads from them. Huge billboards in high-traffic areas. Full-sized ads on a side of a bus. A whole subway car just with mullvad ads.

Some of the ads also felt deceptive making it seem like it will prevent all your online tracking, even though we know that’s not the case.

Re:DNS traffic can leak outside the VPN tunnel on Android by fernandotakai on Friday May 03, 2024 @12:01PM (#40249192)
they do advertise, but they try to keep traditional (instead of influencers) https://mullvad.net/en/help/policy-reviews-advertising-and-a...
Re:DNS traffic can leak outside the VPN tunnel on Android by kfreds on Friday May 03, 2024 @01:58PM (#40250428)
> Some of the ads also felt deceptive making it seem like it will prevent all your online tracking, even though we know that’s not the case.

I'm sorry to hear that. For what it's worth our marketing colleagues make a big effort to minimize the risk of such interpretations. Sometimes a really snappy string of words can be interpreted multiple ways. There's also only so many words we can put on an ad before it gets messy. We do try hard to make the nuances clear on our website, which ultimately is where any new users will have to go in order to buy the service.

Re:DNS traffic can leak outside the VPN tunnel on Android by woodruffw on Friday May 03, 2024 @02:43PM (#40250870)
I’m a big fan of your service, but I agree with GP. I rode the subway yesterday and saw a Mullvad ad that strongly implied that a VPN is adequate protection against data brokers and data collection on websites.

It certainly wasn’t the most egregious VPN ad I’ve ever seen, but it was disappointing to see Mullvad imply privacy properties for VPNs knowing that ordinary people don’t understand cookies, sessions, fingerprinting, or JavaScript.

Re:DNS traffic can leak outside the VPN tunnel on Android by kfreds on Friday May 03, 2024 @06:18PM (#40253002)
Did the ad in fact talk about the VPN by itself, or in conjunction with the Mullvad Browser?

In any case we make the most important nuances clear on our landing page, and in other places on our website.

Re:DNS traffic can leak outside the VPN tunnel on Android by woodruffw on Friday May 03, 2024 @09:53PM (#40254189)
I believe it just said Mullvad, which I interpreted to be the VPN. It was on the NYC subway.
Re:DNS traffic can leak outside the VPN tunnel on Android by wepple on Friday May 03, 2024 @03:50PM (#40251618)
Sorry, not buying it. To claim that you stop online ad networks is a downright falsehood and you know it.

That copy should’ve never made it past basic checks for legitimacy.

Or alternatively: feel free to describe to HN how Mulvad protects users against ad networks.

Re:DNS traffic can leak outside the VPN tunnel on Android by nickburns on Friday May 03, 2024 @05:02PM (#40252355)

  To claim that you stop online ad networks is a downright falsehood and you know it.
can you link to these remarks? i can't see kfreds making any reference to ad networks anywhere.
Re:DNS traffic can leak outside the VPN tunnel on Android by wepple on Saturday May 04, 2024 @06:32AM (#40256498)
I’m going to make sure to photograph the NYC subway ads next time I see them
Re:DNS traffic can leak outside the VPN tunnel on Android by nickburns on Saturday May 04, 2024 @07:52AM (#40256958)
ah, now i understand. your earlier comment very much read like you were accusing kfreds personally of making such a statement about ad networks. but you meant to say one (or more) of the ads you've seen yourself appears to makes such a claim. thanks for clarifying.
Re:DNS traffic can leak outside the VPN tunnel on Android by wepple on Wednesday May 08, 2024 @05:11PM (#40302751)
Follow up: I just took this photo: https://ibb.co/v3rdHcm
Re:DNS traffic can leak outside the VPN tunnel on Android by kfreds on Friday May 03, 2024 @05:49PM (#40252794)
> feel free to describe to HN how Mulvad protects users against ad networks.

A VPN is not enough for privacy. But in combination with a privacy-focused browser, you make sure to block third-party cookies and other tracking technologies used by the data collectors.

That's why we partnered with the Tor Project to develop Mullvad Browser – a browser designed to minimize tracking and fingerprints.

Please also note that this information is clearly displayed on our landing page. We don't want people using our service for things it's not designed for.

Re:DNS traffic can leak outside the VPN tunnel on Android by wepple on Saturday May 04, 2024 @06:33AM (#40256504)
In combination?

The browser piece is doing almost all of the work against ad networks, isn’t it?

Which part of defense against ad networks does a VPN contribute to?

Re:DNS traffic can leak outside the VPN tunnel on Android by robertlagrant on Friday May 03, 2024 @07:02PM (#40253292)
> Sorry, not buying it. To claim that you stop online ad networks is a downright falsehood and you know it.

Where do they claim their VPN stops online ad networks?

Re:DNS traffic can leak outside the VPN tunnel on Android by wepple on Saturday May 04, 2024 @06:32AM (#40256493)
The NYC subway ads
Re:DNS traffic can leak outside the VPN tunnel on Android by robertlagrant on Saturday May 04, 2024 @04:06PM (#40259947)
Can you point me at the one you're talking about, please?
Re:DNS traffic can leak outside the VPN tunnel on Android by wepple on Wednesday May 08, 2024 @05:10PM (#40302742)
I literally just took this photo right now (2024-05-08) https://ibb.co/v3rdHcm
Re:DNS traffic can leak outside the VPN tunnel on Android by roncesvalles on Sunday May 05, 2024 @02:19AM (#40262669)
They do offer DNS-level ads filtering when you enable the VPN.
Re:DNS traffic can leak outside the VPN tunnel on Android by trelane on Friday May 03, 2024 @05:30PM (#40252603)
There are settings to help with that, though.

https://mullvad.net/en/blog/aiding-to-break-habits-gambling-...

https://mullvad.net/en/blog/how-were-knocking-down-ads-and-t...

It's not going to prevent everything, but it'll definitely help.

Re:DNS traffic can leak outside the VPN tunnel on Android by 2OEH8eoCRo0 on Friday May 03, 2024 @11:10AM (#40248578)
I was an extremely happy user until they removed port-forwarding. That forced me to switch unfortunately :(
Re:DNS traffic can leak outside the VPN tunnel on Android by Gormo on Friday May 03, 2024 @11:40AM (#40248936)
How were you using port forwarding with an external VPN?
Re:DNS traffic can leak outside the VPN tunnel on Android by fullspectrumdev on Friday May 03, 2024 @11:47AM (#40249014)
A lot of VPN’s allow you to forward a port from local to “listening” on one of their servers, to make it easier to use P2P filesharing and such.

Mullvad and a few others have had to disable this feature because it turns out it’s super useful for hosting malware C&C servers, phishing pages, etc

Re:DNS traffic can leak outside the VPN tunnel on Android by Gormo on Friday May 03, 2024 @04:25PM (#40251985)
I sort of understand their reasoning, then, because acting as a reverse proxy for externally-initiated inbound connections is not typically within the scope of VPN services per se, and especially outside the scope of Mullvad's particular mission of offering VPN services for the purposes of protecting privacy and suppressing censorship.

There are other solutions for your use case, with or without a third-party VPN, that wouldn't require port forwarding. There are also other VPN services that do offer this functionality.

Re:DNS traffic can leak outside the VPN tunnel on Android by epcoa on Friday May 03, 2024 @01:58PM (#40250422)
It’s typically for BitTorrent.
Re:DNS traffic can leak outside the VPN tunnel on Android by nicce on Friday May 03, 2024 @11:35AM (#40248877)
What was the reasoning for removal?
Re:DNS traffic can leak outside the VPN tunnel on Android by ziddoap on Friday May 03, 2024 @11:46AM (#40249001)
Unsurprisingly, they wrote a blog post about it.

>"Unfortunately port forwarding also allows avenues for abuse, which in some cases can result in a far worse experience for the majority of our users. Regrettably individuals have frequently used this feature to host undesirable content and malicious services from ports that are forwarded from our VPN servers. This has led to law enforcement contacting us, our IPs getting blacklisted, and hosting providers cancelling us."

>"The result is that it affects the majority of our users negatively, because they cannot use our service without having services being blocked."

https://mullvad.net/en/blog/removing-the-support-for-forward...

Re:DNS traffic can leak outside the VPN tunnel on Android by sli on Friday May 03, 2024 @11:24PM (#40254551)
They don't do YouTube sponsors but they sure plastered their ads all over Chicago. Literally everywhere.
Re:DNS traffic can leak outside the VPN tunnel on Android by dkga on Friday May 03, 2024 @01:38PM (#40250213)
Good points. By the way, how do they compare with the likes of ProtonVPN?
Re:DNS traffic can leak outside the VPN tunnel on Android by rmdes on Friday May 03, 2024 @02:25PM (#40250707)
Simply the best VPN around, in terms of values, mindset, loyalty to their core beliefs and the relentless proof to stick to their moto over the last decades.
Re:DNS traffic can leak outside the VPN tunnel on Android by stoniejohnson on Friday May 03, 2024 @03:16PM (#40251214)
only bummer is that due to their strong respect of user anonymity a lot of their IPs are blocked by major platforms like Reddit
Re:DNS traffic can leak outside the VPN tunnel on Android by spxneo on Friday May 03, 2024 @03:18PM (#40251245)
how are platforms like reddit able to get complete list of mullvad IPs and other vpns but not residential proxies?
Re:DNS traffic can leak outside the VPN tunnel on Android by jorams on Friday May 03, 2024 @04:13PM (#40251861)
Well I don't know how many IP addresses each of Mullvad's servers have, but they list a domain name IPv4 and IPv6 address for all of them publicly[1].

[1]: https://mullvad.net/en/servers

Re:DNS traffic can leak outside the VPN tunnel on Android by lbhdc on Friday May 03, 2024 @03:37PM (#40251456)
I am not sure how they do it, but one option is setting some arbitrary threshold for number of devices fingerprinted on a single ip in a given period of time. Something like taking the average number of devices and denying access to ips that they detect ~3 sigma different devices from.
Re:DNS traffic can leak outside the VPN tunnel on Android by adamomada on Friday May 03, 2024 @03:35PM (#40251432)
It’s an industry now e.g. https://ipinfo.io
Re:DNS traffic can leak outside the VPN tunnel on Android by spxneo on Friday May 03, 2024 @03:38PM (#40251467)
damn this is crazy, how did they even compile all the residential proxies

im seeing it detect!!

Re:DNS traffic can leak outside the VPN tunnel on Android by fragmede on Friday May 03, 2024 @04:10PM (#40251837)
Net flows. A residential proxy should have a residential amount of traffic coming from it. If one IP has 1000x the usual traffic one household could reasonably account for, then mark it as a residential proxy. It won't be 100% accurate, but it's sufficiently accurate for reddit to go on a blocking spree.
Re:DNS traffic can leak outside the VPN tunnel on Android by utensil4778 on Friday May 03, 2024 @10:17PM (#40254277)
How does one even get access to that kind of information? Are ISPs just selling this stuff or what?
Re:DNS traffic can leak outside the VPN tunnel on Android by reincoder on Saturday May 04, 2024 @07:02AM (#40256642)
We have 700 servers around the world and we run measurements over all of the usable internet space, including assigned IPv6 addresses.

I highly recommend reading some of our blog posts and community posts.

You can also checkout our IP data tags page: https://ipinfo.io/tags

Re:DNS traffic can leak outside the VPN tunnel on Android by reincoder on Saturday May 04, 2024 @07:14AM (#40256731)
Our detection model at ipinfo is largely based on behavior models of IP addresses. We have 700 servers around the world from which we run internet measurement, allowing us to reliably determine which IP addresses are VPNs or proxies. These measurements are largely ping/traceroute data, which enable us to estimate a number of different things most importantly IP location data.

If you are interested in what kind of other information we can discover from our internet measurements, check out our tags page: https://ipinfo.io/tags

Re:DNS traffic can leak outside the VPN tunnel on Android by stoniejohnson on Friday May 03, 2024 @03:28PM (#40251348)
people use mullvad IPs maliciously -> those IPs end up on blocklists
Re:DNS traffic can leak outside the VPN tunnel on Android by EA-3167 on Friday May 03, 2024 @03:22PM (#40251292)
I use Mullvad and Reddit has never tried to block me, in fact I've run into no blocks at all. Then again my browsing habits are quite boring.
Re:DNS traffic can leak outside the VPN tunnel on Android by stoniejohnson on Friday May 03, 2024 @03:25PM (#40251320)
you are likely logged in! they only enforce the blocklist on lurkers
Re:DNS traffic can leak outside the VPN tunnel on Android by EA-3167 on Friday May 03, 2024 @04:42PM (#40252160)
You're correct, and I just tested it... seems that about half of Mullvad IP's are in fact blocked if you're logged out. Good catch.
Re:DNS traffic can leak outside the VPN tunnel on Android by colordrops on Friday May 03, 2024 @03:21PM (#40251281)
What VPN do you use, if any?
Re:DNS traffic can leak outside the VPN tunnel on Android by godelski on Friday May 03, 2024 @08:50PM (#40253896)
If you don't use a VPN I'll note that they have a DNS service that is free. I think this demonstrates some support, at least in the way that increased traffic/usage can be support (and should help make Mullvad VPN users stand out less WRT DNS requests). The only downside I'll say is that the ping time for me is quite a bit higher than quad9 or cloudflare.

I wrote some info about it in this thread[0], including how you can do ad blocking at the DNS level (and cloudflare info for the same).

[0] https://news.ycombinator.com/item?id=40056162

Re:DNS traffic can leak outside the VPN tunnel on Android by bjoli on Sunday May 05, 2024 @12:42AM (#40262296)
I AM a user of mullvad, and I am extremely satisfied. I once mailed support with a payment question and added a small iptables question regarding a problem I had.

I got back a swift reply which solved the payment question, and a detailed iptables reply with pros and cons of different solutions.

In short: they are great.