News for hackers. Stuff that matters.
Re:Mastercard DNS Error Went Unnoticed for Years by thedanbob on Wednesday January 22, 2025 @12:13PM (#42795053)
Mastercard: "We have looked into the matter and there was not a risk to our systems"

Also Mastercard: has expressed concerns about the public nature of this disclosure.

Good for him for making it all public. The only way to (sometimes) get big companies to fix their mistakes (besides the legal system) is to shame them into it.

Re:Mastercard DNS Error Went Unnoticed for Years by zettabomb on Wednesday January 22, 2025 @12:28PM (#42795255)
Yeah, isn't it pretty standard to first report privately, then report publicly if they don't take any action (and you believe it to still be an issue)? That seems consistent with mosr organization's responsible disclosure practices.
Re:Mastercard DNS Error Went Unnoticed for Years by JohnMakin on Wednesday January 22, 2025 @01:37PM (#42796044)
this is standard, but there are people out there that believe this is malicious/blackmailing behavior. I think it’s the most responsible thing you can do here. This guy could’ve made a bucket off this find, instead reports it responsibly and mitigates the risk (with his own money invested) and gets told to pound sand.
Re:Mastercard DNS Error Went Unnoticed for Years by TZubiri on Wednesday January 22, 2025 @12:33PM (#42795308)
Can security researchers send an invoice for a reasonable amount conmesurate with the value of the service provided and then sue for quantum meruit if it is not paid?
Re:Mastercard DNS Error Went Unnoticed for Years by rafram on Wednesday January 22, 2025 @12:42PM (#42795406)
Can those people who wash your windshield at red lights actually make you pay?

If your neighbor leaves their door unlocked while they’re at work, can you go change the locks (for their safety!) and bill them for your time?

No, of course not. Why would you be able to bill for a service that you weren’t asked to provide?

Re:Mastercard DNS Error Went Unnoticed for Years by cperciva on Wednesday January 22, 2025 @01:18PM (#42795850)
Why would you be able to bill for a service that you weren’t asked to provide?

This can happen; if you're found unconscious and taken to the hospital, you can be billed for medical care which you didn't ask for, based on the doctrine of presumed consent.

One could imagine a parallel -- a critical emergency where it's impossible to communicate but it's reasonable to presume that they would want to have the issue fixed if they were aware. I don't think it necessarily applies here, but it's at least possible that another case could meet that bar.

Re:Mastercard DNS Error Went Unnoticed for Years by TZubiri on Wednesday January 22, 2025 @08:58PM (#42799794)
Additionally in this case the company has a bug bounty policy / program, so it isn't quite unsolicited.
Re:Mastercard DNS Error Went Unnoticed for Years by bmicraft on Wednesday January 22, 2025 @12:49PM (#42795485)
Well, in a case such as this: because they're putting other people's data/money at risk and should have payed somebody to discover flaws like this in the first place. It's not the law but maybe it should be.
Re:Mastercard DNS Error Went Unnoticed for Years by giancarlostoro on Wednesday January 22, 2025 @12:55PM (#42795568)
Legal extortion you way?
Re:Mastercard DNS Error Went Unnoticed for Years by the8472 on Wednesday January 22, 2025 @01:08PM (#42795749)
Well, the users of the system should be able to recoup some of their costs for services (security) not rendered and then pay the researcher for that. In a more well-coordinated society none of this would happen because the company would have avoided the predictable outcome by hiring a security person in the first place.
Re:Mastercard DNS Error Went Unnoticed for Years by rafram on Wednesday January 22, 2025 @12:55PM (#42795560)
And if you can’t see out of your dirty windshield, you could cause an accident. If your neighbor’s door is unlocked all day, someone could break in and steal their TV.

I mean, why should I even need to apply for any job? McDonald’s always needs workers; do you think they’ll mind if I walk into the kitchen, start flipping burgers, and then name my hourly rate at the end of the day?

Re:Mastercard DNS Error Went Unnoticed for Years by bmicraft on Thursday January 23, 2025 @04:27AM (#42802319)
We were talking about "reasonable", which your reply seems to miss completely. Reasonable can mean a lot of things, including a predefined rate or a fixed way to calculate compensation owed.
Re:Mastercard DNS Error Went Unnoticed for Years by randysalami on Wednesday January 22, 2025 @01:14PM (#42795818)
They can smash your window
Re:Mastercard DNS Error Went Unnoticed for Years by itishappy on Wednesday January 22, 2025 @01:29PM (#42795955)
Not legally.
Re:Mastercard DNS Error Went Unnoticed for Years by TZubiri on Wednesday January 22, 2025 @09:17PM (#42799904)
Details matter, and the examples you came up with are ridiculously off base.

In this case there was a bug bounty program, so it is not as unsolicited as someone washing your windshield at a stoplight.

Secondly this is not a personal residence, thirdly the property was never broken into by the researcher (nor locks changed), finally there's is fiduciary duty from the company to their clients/users.

Since you are keen on hypothetical scenarios, let me present to you a more similar scenario. A school is situated near an old tree in a nearby lot that has a risk of falling, either on the school or on the public sidewalk, the researcher notices it, rents the nearby lot and safely chops down the tree. Then sends a bill to the school for chopping down the tree.

It is important to note that I didn't ask the question in order to get the opinion of strangers on what should happen based on personal ethics, rather I asked the question in case someone knowledgeable about the law knew the actual answer as to what the courts rule.

Re:Mastercard DNS Error Went Unnoticed for Years by pizzafeelsright on Wednesday January 22, 2025 @12:40PM (#42795380)
I spent a minute reading this. My time is worth $300/hr and I bill in tenths of an hour.

Where do I send the invoice?

Re:Mastercard DNS Error Went Unnoticed for Years by TZubiri on Wednesday January 22, 2025 @09:35PM (#42800014)
"For example, to state a claim for unjust enrichment in New York, a plaintiff must allege that (1) defendant was enriched; (2) the enrichment was at plaintiff's expense; and (3) the circumstances were such that equity and good conscience require defendants to make restitution.[1]"

Of course that (3) is the contentious point typically, but you haven't even gotten (1) right. How does you reading my comment provide value to me?

It's also funny that, excluding the element of a relationship previously existing, This is the way most business on an hourly basis is made.

Suppose you have a lawyer, you agree on 300$/hr, then you ask them to draft a contract and pay them 600$/hr. If someday you are imprisoned and your lawyer is contacted by law enforcement, and they have to bail you out of jail. They would typically send you an invoice even if you didn't solicit that specific service.

While it's not insignificant that you had a previous hourly arrangement for a different type of work, it's certainly not a sufficient reason to claim that you owe them for their time and bond monies.

Re:Mastercard DNS Error Went Unnoticed for Years by ziddoap on Wednesday January 22, 2025 @12:38PM (#42795352)
The only people that I know do this are "Beg Bounty" "Security Researchers" that are, essentially, attempting to extort people.

Even if it would be legally possible (I don't think you can force your 'services' on an unwilling entity and then force them to pay), it would be absolutely awful optics.

Re:Mastercard DNS Error Went Unnoticed for Years by thatguy0900 on Wednesday January 22, 2025 @12:42PM (#42795400)
The closest I can think is the old scam where a business would mail you a package then demand payment for the item mailed to you. That was solved by just making anything shipped to you yours with no legal obligation to send it back
Re:Mastercard DNS Error Went Unnoticed for Years by kmoser on Wednesday January 22, 2025 @04:53PM (#42797918)
Unfortunately it doesn't work for instances of, say, a bank accidentally depositing extra money in your account, or their ATMs accidentally dispensing too much cash.
Re:Mastercard DNS Error Went Unnoticed for Years by themaninthedark on Thursday January 23, 2025 @12:46PM (#42806126)
Why would it? The situations are entirely different; in the mail package situation, the outside company is attempting to get you to pay for something that you did not request. In the Bank/ATM, the company made a mistake.

For the bank situation to work, they would have to add an unrequested service to your account and then attempt to charge you for it. i.e. Bank adds overdraft protection to you checking account and then bills you for it.

Say you have an internet plan with a 5GB download limit and after 5GB the connection would no longer send data, one month it lets you download 7GB and then they send you a bill for going over. You probably would not have to pay the bill since they changed their behavior and provided extra without prior notification.

Re:Mastercard DNS Error Went Unnoticed for Years by TZubiri on Wednesday January 22, 2025 @09:46PM (#42800093)
Re:Optics, I agree, but I think they would be counterweighted by the dimension of the issue fixed.

To put a hypothetical example, if I fix a life threatening electrical or structural issue in a children's hospital unsolicited, whatever hit to my reputation I take by charging for unsolicited work, is dwarved and possible restored and reversed by the gravity of the issue fixed and the consquences avoided.

Of course this is contingent on whether the value was actually provided and whether it is provable.

Re:Mastercard DNS Error Went Unnoticed for Years by tptacek on Wednesday January 22, 2025 @12:55PM (#42795555)
Of course not.
Re:Mastercard DNS Error Went Unnoticed for Years by znpy on Wednesday January 22, 2025 @01:06PM (#42795725)
most door locks can be easily picked.

can i go from house to house, pick locks and then demand payment?

(spoiler: no)

Re:Mastercard DNS Error Went Unnoticed for Years by TZubiri on Friday January 24, 2025 @08:54AM (#42813017)
I feel you are just applying a classic example from ethical hacking 101 that doesn't apply at all.

The common example is that a house can have a door without lock, but it is still a crime to enter. Similarly, entering into a vulnerable system or a system without password even is not legal (although of course the existence of a password or lock mechanism makes undeniable the fact that the place is not for public entry)

In this case there is no entering into any system. There is no lock picked, no server accessed.

Re:Mastercard DNS Error Went Unnoticed for Years by znpy on Friday January 31, 2025 @05:04AM (#42886273)
irrelevant.

can i just decide on my own to do some work, and then *demand* payment for such work?

the answer is still no.

Re:Mastercard DNS Error Went Unnoticed for Years by snakeyjake on Wednesday January 22, 2025 @01:04PM (#42795680)
Yes, they can. Anyone can sue anyone else for any reason.

It will be a colossal waste of everyone's time and money, though, because they will never prevail.

Re:Mastercard DNS Error Went Unnoticed for Years by dizhn on Wednesday January 22, 2025 @01:06PM (#42795723)
That sounds like a fine, not an invoice. If you can compel them to pay, sure. ;)
Re:Mastercard DNS Error Went Unnoticed for Years by TZubiri on Friday January 24, 2025 @08:50AM (#42812987)
No.

A fine is punitive, an invoice is compensatory.

Re:Mastercard DNS Error Went Unnoticed for Years by yapyap on Wednesday January 22, 2025 @12:56PM (#42795574)
They can not.
Re:Mastercard DNS Error Went Unnoticed for Years by Retr0id on Wednesday January 22, 2025 @12:58PM (#42795612)
Companies have little direct motivation to have good security practices, they're only motivated to manage their reputation. Any attention they pay to security is only a side-effect of caring about reputation management.
Re:Mastercard DNS Error Went Unnoticed for Years by jedberg on Wednesday January 22, 2025 @01:13PM (#42795803)
And as we've learned from significant breaches, there is rarely a reputational hit for even the biggest breaches. Anyone remember that time Target accidentally doxxed 70 million people? I don't think there was any noticeable difference in their income or profits.

No one cared.

Re:Mastercard DNS Error Went Unnoticed for Years by kmoser on Wednesday January 22, 2025 @04:49PM (#42797885)
If anything, the publicity (more mentions of their company name) may have even led to a slight uptick in sales.
Re:Mastercard DNS Error Went Unnoticed for Years by diggan on Wednesday January 22, 2025 @01:00PM (#42795639)
And ultimately, the only reason they care about their reputation is because it affects their profits. For-profit companies optimize for profits, as always :)
Re:Mastercard DNS Error Went Unnoticed for Years by sirlone on Wednesday January 22, 2025 @01:26PM (#42795929)
So the mom-and-pop donut shop on the corner always optimizes for profits? The local donut shop?

Most companies do not actually optimize for profit. If they did they'd stop whatever it is they are currently doing and switch to whatever industry makes the most profit. They don't though, they keep making/doing whatever it is they start with generally. That means they aren't actually optimizing for profit.

Re:Mastercard DNS Error Went Unnoticed for Years by eddd-ddde on Wednesday January 22, 2025 @01:44PM (#42796115)
Not all work is equal. Value is derived from having an edge over the competition. If you are a good baker then baking may be optimizing for profit. Also if everyone just switched to X it wouldn't be the best option anymore.
Re:Mastercard DNS Error Went Unnoticed for Years by kevin_thibedeau on Wednesday January 22, 2025 @01:58PM (#42796267)
Profitability is important to any size business. Profit growth is what many large business C-levels obsess over because they get to eat a slice of the expanding pie.
Re:Mastercard DNS Error Went Unnoticed for Years by Obscurity4340 on Wednesday January 22, 2025 @02:20PM (#42796461)
Its almost like if they want a piece of the expanding pie hell be damned, they should recieve actual liabillity criminal and civil for the trouble and take away any profit incentive that drove them in the first place
Re:Mastercard DNS Error Went Unnoticed for Years by neilwilson on Wednesday January 22, 2025 @01:33PM (#42796001)
That is optimising for profit. One of the problems with any comparative advantage argument is that capital is destroyed during any pivot.

That cost has to be factored into the return from pivoting.

Re:Mastercard DNS Error Went Unnoticed for Years by baq on Wednesday January 22, 2025 @02:29PM (#42796551)
Any business will optimize for profit > 0, otherwise it’s a loss making business and will shut down sooner or later. Not all businesses optimize for maximum possible profit.
Re:Mastercard DNS Error Went Unnoticed for Years by HPsquared on Wednesday January 22, 2025 @02:08PM (#42796336)
There are time and probability elements which can only be reduced down to NPV (net present value) my making assumptions and analysis.
Re:Mastercard DNS Error Went Unnoticed for Years by sophacles on Wednesday January 22, 2025 @02:03PM (#42796300)
No, that's absurd for so many different reasons:

* if everyone who sold donuts suddenly went into AI there'd be a huge profit opportunity in donuts - optimizing for profits would be to wait for the other donut sellers to switch into AI and rake in the cash.

* the cost of retooling constantly based on the latest profit fad would just make the toolmakers the main profit center, and the toolmakers would just use their own gear to take all the profits in abandoned markets.

* the constant shift of areas of business would be sub-optimal because most people entering it would know nothing of how to succeed in that field, it's not optimal for your company to be incompetent in an area with much competition.

* labor costs in the "only profitable field" would be through the roof as everyone scrambled to hire competent people - not an optimal way to maximize profit in a crowded industry (also, this compounds with the above point).

In fact this idea is so bad (and yet weirdly beleived by many) that every boom there's memes and jokes about how absurd it is that random companies from completely different industries are getting involved... as if they have a chance to compete against the established players. And even more jokes about how they predictably go out of business.

Re:Mastercard DNS Error Went Unnoticed for Years by jbs789 on Wednesday January 22, 2025 @01:48PM (#42796160)
Umm… continuing the donut example, the owners are likely maximising their return given their skill sets, knowledge, time, etc. But return is pretty nuanced too bc it probably is not just be profits, but family time etc. in any event, I think you’re right that businesses don’t just focus on profits. But the example doesn’t prove the point.
Re:Mastercard DNS Error Went Unnoticed for Years by hinkley on Wednesday January 22, 2025 @01:41PM (#42796089)
No. There’s prestige and power in running high profile companies.

It’s a middle class fantasy that money is power. Look at the Cheeto. How many times has he been bankrupt? What does he say about bankruptcy? He knows he’ll be fine because power brings money, not the other way around.

Taxing billionaires will help the economy absolutely, but it won’t control the billionaires, because a lot of their deals aren’t denominated in hard currency. We don’t know how to tax favors or threats.

Re:Mastercard DNS Error Went Unnoticed for Years by wat10000 on Wednesday January 22, 2025 @02:48PM (#42796747)
Money is definitionally power. Its sole purpose is to convince other people to do things you want them to do. Thats what power is.

There are other sources of power besides money, but money is definitely one kind.

Consider Twitter. Musk managed to get institutions to put up a fabulous amount of money, but he still had to pay a massive amount himself. If he had $1,000 in the bank and nothing else, that deal would never have happened. Heck, even with $1 billion it wouldn’t have happened. As it was, he got to take a couple dozen billion units of monetary power and convert them into massive non-monetary power.

Re:Mastercard DNS Error Went Unnoticed for Years by hinkley on Wednesday January 22, 2025 @02:58PM (#42796854)
Money is the cover charge, to get access. Have you not seen how old money treats new money?
Re:Mastercard DNS Error Went Unnoticed for Years by wat10000 on Wednesday January 22, 2025 @03:15PM (#42796997)
Have you ever seen the difference in a plumber’s behavior when you pay them versus when you don’t?

Like I said, money isn’t the only power. But power is the only thing money is.

Re:Mastercard DNS Error Went Unnoticed for Years by hinkley on Wednesday January 22, 2025 @03:52PM (#42797367)
Give the plumber $2 million and he still won’t be taken seriously at the country club. He can try to buy influence from local politicians, but that only works until an older family disagrees with him and offers something better. Like a job for their niece. Or not to publish those pictures from that party.
Re:Mastercard DNS Error Went Unnoticed for Years by wat10000 on Wednesday January 22, 2025 @05:11PM (#42798067)
Not sure how many times I have to acknowledge non-monetary power before it sticks…
Re:Mastercard DNS Error Went Unnoticed for Years by newsclues on Wednesday January 22, 2025 @01:29PM (#42795958)
Companies do have a motivation to have good security practices (and disclosure), because they are motivated by their reputation which is essential for customers to trust them to be customers, even more with the proliferation of SaaS means more longterm relationships and customer data.

The challenge is for customers and companies to communicate and agree to the new social contract.

Re:Mastercard DNS Error Went Unnoticed for Years by znpy on Wednesday January 22, 2025 @01:05PM (#42795707)
> The only way to (sometimes) get big companies to fix their mistakes (besides the legal system) is to shame them into it.

in the golden years of twitter the quickest way to get proper support from companies was to talk shit about their services on twitter.

i was always amazed by how quick i could get in touch with an actual human being using that strategy.

this remind me of some other borderline unethical techniques i read online...

basically when dealing some kind of problems with non-IT infrastructure, if you cannot get "support" to acknowledge issues then you change your strategy and write to the lawyers from the company or public entity managing that piece of infrastructure and inform them of the legal liability deriving from the issue that you noticed.

once that is done, if ANYTHING happens, they cannot deny knowledge of the issue.

they will involve whoever is needed, internally, to get the issue fixed.

so yeah... basically often times to get technical issues fixed you're better off resorting to a human (rather than technical) approach.

Re:Mastercard DNS Error Went Unnoticed for Years by cedws on Wednesday January 22, 2025 @01:26PM (#42795934)
Mastercard should be heavily fined for this. And I mean really heavily, like some percentage, or fraction of a percentage of global revenue. That's how you get them to take security seriously.
Re:Mastercard DNS Error Went Unnoticed for Years by josh_cutler on Wednesday January 22, 2025 @01:32PM (#42795994)
By who?
Re:Mastercard DNS Error Went Unnoticed for Years by imtringued on Wednesday January 22, 2025 @02:35PM (#42796620)
According to German law, a competitor (possibly Visa) can sue a company for uncompetitive behaviour that has the potential to affect the consumer negatively.

This means that at least in theory a security researcher could work as a contractor at a competing firm to then let their legal department send a cease and desist letter and demand recouperation of the legal fees including the money paid to the security researcher to find the vulnerability.

Anyone who quotes me on this in their court case is an idiot.

Re:Mastercard DNS Error Went Unnoticed for Years by hinkley on Wednesday January 22, 2025 @01:37PM (#42796050)
Also Mastercard:

You don’t usually buy much but today you bought a very expensive TV and then got a car wash in a part of town you haven’t been to for two years.

We aren’t calling you about the TV. We’re calling about the $8 car wash.

(Actual incident)

Re:Mastercard DNS Error Went Unnoticed for Years by mikepurvis on Wednesday January 22, 2025 @02:23PM (#42796488)
Just before Christmas my Canadian bank (RBC) texted me to say that they'd blocked a suspicious transaction. In the text message they included a phone number that I could call to get more information about the incident. It felt fishy but out of curiosity I called it and they wanted to ask me my "security questions" to confirm my identity.

I hung up and instead called the actual number on the back of the card. The whole thing was real, the bank had actually contacted me by text and sent me a follow up phone number.

Truly I don't understand what they're thinking sometimes.

Re:Mastercard DNS Error Went Unnoticed for Years by baq on Wednesday January 22, 2025 @02:25PM (#42796516)
This is solved by them having you do a 2fa via the bank app whenever you and the bank talk regardless who called who.

Disclaimer: my bank does this

Re:Mastercard DNS Error Went Unnoticed for Years by mikepurvis on Wednesday January 22, 2025 @02:29PM (#42796561)
The bank app was the first thing I checked when I got the text message, because I was so surprised they wouldn't have just sent me a push notification through there. And there was no indication in there was any kind of problem with the card, no sign of the pending/blocked transaction, nothing.

And they definitely have the 2FA-through-app capability because it's used for auth when I sign into online banking on a computer— the app has to grant permission for the new device. But hilariously they don't seem to have it wired up yet for phone interactions.

Re:Mastercard DNS Error Went Unnoticed for Years by Rodeoclash on Wednesday January 22, 2025 @02:38PM (#42796649)
Yes, please just read the numbers out to me on the phone so I can confirm who you are...
Re:Mastercard DNS Error Went Unnoticed for Years by baq on Wednesday January 22, 2025 @03:41PM (#42797258)
It’s the other way around - the app shows you who you are talking to on the bank side and asks you to confirm that you’re on a call with that person
Re:Mastercard DNS Error Went Unnoticed for Years by mikepurvis on Wednesday January 22, 2025 @04:37PM (#42797787)
Really it should be both, where the app asks you to input a code given from the person on the phone (confirms to you they're actually from the bank), and then gives you a code that you tell the person on the phone (confirms to them that you're really the customer).

Of course the more automation you put around this, the easier it becomes to MITM it, like a scammer simultaneously calls both you and the bank and passes the codes back and forth, pretending to you that the call is about a credit card offer, while using the call with the bank to drain your account. That's a lot harder to pull off with a human in the loop as the real bank person will get suspicious at the delayed responses, even barring some amount of stalling ("oh hang on I left my phone downstairs, let me find it oh god it's updating again, let me just get you that code, give me a sec here"). But it becomes trivial if the authentication is moved to IVR and by the time the human operator is on the line the call is already considered safe.

Re:Mastercard DNS Error Went Unnoticed for Years by trollied on Wednesday January 22, 2025 @03:26PM (#42797103)
My bank has a banner at the top of the app if you are on a call with them. It's great if you know to check...
Re:Mastercard DNS Error Went Unnoticed for Years by Terr_ on Wednesday January 22, 2025 @02:29PM (#42796552)
That reminds me of my rant over some recent IRS free-filing stuff. They were basically telling users to go ahead and trust a third-party service named id.me with all their sensitive personal identifying information.

FFS guys, at the bare minimum you should have white-labeled that behind a domain like id.irs.gov! Not just to avoid mis-educating users into terrible security habits, but also to avoid giving some Montenegro DNS folks the ability to intercept or man-in-the-middle all the information.

Re:Mastercard DNS Error Went Unnoticed for Years by hinkley on Wednesday January 22, 2025 @02:49PM (#42796758)
My bank does the same thing and I tel at them every time.

They did stop putting hyperlinks in email communications though. It’s a start.

Re:Mastercard DNS Error Went Unnoticed for Years by ok_dad on Wednesday January 22, 2025 @02:28PM (#42796547)
I had my card paused SEVERAL times over the years for sketchy stuff like getting gas at the same gas station I always get gas at or buying a delivery of pizza on a Big Name Company's website. Then, two times in the past year, someone bought thousands of dollars in iPhones, rental apartments, and gasoline on my card on a different body of land than the one I live on thousands of miles away in rapid succession and each of the two times it was ME who caught it because of notifications I have setup! Fraud departments at banks and card companies are fucking useless.
Re:Mastercard DNS Error Went Unnoticed for Years by tpurves on Wednesday January 22, 2025 @02:03PM (#42796304)
This experience actually says more about what's been going on at that car wash you visited...
Re:Mastercard DNS Error Went Unnoticed for Years by hinkley on Wednesday January 22, 2025 @03:00PM (#42796877)
Largest and nicest chain in town. If someone was using it for money laundering then they sure were doing a good job of keeping up the facade.
Re:Mastercard DNS Error Went Unnoticed for Years by diffuse_l on Wednesday January 22, 2025 @01:53PM (#42796220)
Another story: I was abroad, and someone got my card details and made purchases for thousands of $ in a different part of the country that I don't usually visit and certainly doesn't purchase there stuff for that amount of money.

Nobody even cared, but a payment I made for 2 euros wasn't accepted becuase reasons, and every online purchase needed some authorization.

When I called them, they said they'll look into the purchases. Well, they cancelled the purchases quite fast, but the surrealism of it all...

Re:Mastercard DNS Error Went Unnoticed for Years by vrosas on Wednesday January 22, 2025 @01:58PM (#42796266)
When I worked at another large credit card issuer, I was told the algorithm to detect fraud was essentially a black box. No one left at the company really knew how it worked or how to change it, so it was left intact and new rules were simply added on top.
Re:Mastercard DNS Error Went Unnoticed for Years by baq on Wednesday January 22, 2025 @02:27PM (#42796529)
If they don’t know, at least the fraudsters won’t, either!
Re:Mastercard DNS Error Went Unnoticed for Years by hinkley on Wednesday January 22, 2025 @07:11PM (#42798989)
I hate that this is true.

There's always some third party thing I'm trying to figure out why it's telling me 'no' and not providing useful error messages and it's because they can't tell me without also telling the mischief-makers.

Re:Mastercard DNS Error Went Unnoticed for Years by IYasha on Thursday January 23, 2025 @01:26PM (#42806510)
This is truly the next level of "Security by Obscurity"! :'D
Re:Mastercard DNS Error Went Unnoticed for Years by azinman2 on Wednesday January 22, 2025 @02:02PM (#42796291)
Did you alert them to your upcoming travel?
Re:Mastercard DNS Error Went Unnoticed for Years by joe5150 on Wednesday January 22, 2025 @02:10PM (#42796347)
This is increasingly not a thing. I haven't had to do this in a very long time and my primary credit cards don't even have it in the apps/website anymore.
Re:Mastercard DNS Error Went Unnoticed for Years by jancsika on Wednesday January 22, 2025 @02:19PM (#42796445)
It's kinda like how Linux's RNG code has no special case to keep from outputting 123456789.

Seriously?!?

Everybody knows that's not a random number.

Re:Mastercard DNS Error Went Unnoticed for Years by hebocon on Wednesday January 22, 2025 @02:30PM (#42796568)
It seems more unreasonable to me to make arbitrary exceptions like that. I would want my RNG to be predictably random so that if 123456788 comes up I know that it's not some sort of kludge to avoid a more interesting number.
Re:Mastercard DNS Error Went Unnoticed for Years by dmd on Wednesday January 22, 2025 @02:32PM (#42796592)
Really struggling to understand what this has to do with the topic.
Re:Mastercard DNS Error Went Unnoticed for Years by zen928 on Thursday January 23, 2025 @02:08AM (#42801486)
Ironically enough, that's somewhat part of their point. They're lightly mocking the parent poster who wants to erroneously correlate human intuition on what "looks" or "feels like" the obvious problem despite it having no relation to the outcome. There's absolutely no solid conclusion anyone can draw from their story about why they called for the car wash vs the expensive tv, but they wanted to pretend that it's a clear sign of fault in their fraud detection system versus any plausible explanation. I could very easily craft a narrative to flip your expectation of what should be the 'right' outcome, and in the end it's still completely irrelevant to the topic of security.

Which is to say, if someone used a random number generator and received 12345 and then huffed online about how it isn't generating 'real' random numbers in a security thread, you would be right to second guess anything they had to say if they start with an immediately false premise.

Re:Mastercard DNS Error Went Unnoticed for Years by splonk on Wednesday January 22, 2025 @09:11PM (#42799872)
It is very common to test stolen cards at gas stations (relatively anonymous and available, and easy to just drive away if the card fails). If that car wash was attached to a gas station, fraud detection algorithms have a tendency for false positives at gas stations because of that.

On the flip side, it's somewhat difficult to buy an expensive TV without showing up on camera at some point. As methods for monetizing stolen cards go, it's pretty uncommon.