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Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by delecti on Saturday August 17, 2024 @11:38PM (#41279970)
My bank introduced "usernames" at some point, breaking login with email addresses, but didn't document this fact, or enforce that usernames not be set to email addresses. For a few months, every time I went to login, I had to use the "find my account" function, and each time I would again set my username to my email address (and why wouldn't I, it had been my login credential for nearly a decade by that point). At no point did it ever enforce a restriction on the @ or . in the username, until I went to login. It took me literal months to figure out and set it to something else.

This is Capital One by the way. My account was originally ING Direct, then Capital One 360, before being fully incorporated into the rest of their nonsense, and I assume that's related to the username situation.

Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by cma on Sunday August 18, 2024 @12:08AM (#41280062)
Wells Fargo silently truncates passwords to a really short length. People using long passphrase-like passwords really just get a dictionary word for their password without being told.
Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by EduardoBautista on Sunday August 18, 2024 @01:19AM (#41280278)
At a Mexican bank, Banregio, there was a character limit to the username on mobile but not on web. So I originally had a username that was accepted at registration but not when I tried to log in on my phone and it wouldn’t allow me to input my entire username.

Edit: The issue was with the password field, not the username.

Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by cuu508 on Sunday August 18, 2024 @02:13AM (#41280469)
Speaking of character limits, my bank, Swedbank Latvia, used to have a 16-character limit on passwords. After lots and lots and lots of pestering over various channels, they finally fixed it. But the "fix" was to add a maxlength attribute on an input field. So the field will accept the 16 first characters and ignore the rest (password fields are masked so the user cannot see the field is not accepting their input). So yes, I could now set my password to "SwedbankSecurityExperts", yay. But I could later log in with "SwedbankSecurityIncompetence" as well...
Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by vladvasiliu on Sunday August 18, 2024 @03:09AM (#41280696)
Well, 16 isn't so bad. Here, in France, BNP accounts must have exactly six digit passwords. They're also incompatible with password managers: you have to click the number on a visual number pad.
Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by Teever on Sunday August 18, 2024 @09:41AM (#41282332)
Surely that must afoul of some sort of French laws regarding accessibility?

How are blind people supposed to use this UI?

Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by vladvasiliu on Sunday August 18, 2024 @01:10PM (#41283614)
To be honest, I'm neither a web dev/designer nor do I have bad sight, so I admit I don't really know how accessibility works. I expect this to be compatible with screen readers somehow, they even say they take this seriously. But from a quick glance at the Accessibility tab in Firefox, I see many complaints about "interactive elements must be labeled".

Obviously, if the computer reads aloud the password as you type it, it's an absolute win for security, and I'm sure some PMs somewhere are quite content with a job well done.

For the curious, here's the login page: https://mabanque.bnpparibas/fr/connexion

Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by sebastiennight on Sunday August 18, 2024 @05:24PM (#41285623)
La Banque Postale actually has a toggle button to make the computer read the code out loud as you type it.

It's no big deal... you'd need to be blind to miss someone nearby listening in!

Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by sebastiennight on Sunday August 18, 2024 @01:27PM (#41283749)
Maybe it's a French law or something.

I've had business and personal accounts with SG, La Banque Postale, BoursoBank and CIC and they all worked with those 6-character "visual number pad" logins.

Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by vladvasiliu on Sunday August 18, 2024 @01:45PM (#41283899)
I doubt it. N26, which is granted a "new bank", doesn't have that, even though it now has an actual French subsidiary, complete with French account numbers. My password with them is way above 6 characters, and contains numbers, letters and symbols. The login page has a regular password field.

I think the others are just copycats. Someone must have come up with this first, and the others figured "yeah, that looks so secure, let's do that, too". If I had a penny for every CSO who justified some stupid "security" idea with "everybody does it, why shouldn't we?" I'd be so rich I wouldn't care about this crap anymore.

Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by CorrectHorseBat on Sunday August 18, 2024 @07:08AM (#41281612)
At least you can login. Alipay in China has (or had, it's been a while) a max length of about 16 characters for your full name, but when linking to your bank account it compares with the whole string, so any name longer than 16 characters will always return false.
Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by Apfel on Sunday August 18, 2024 @09:46AM (#41282356)
I've spent a lot of time in China over the years and most of their tech systems are built on the assumption that only Chinese folk will ever use it. In this case, the vast majority of Chinese people have a 2, 3 or 4 character name ('why would you EVER need 16, silly 老外?')

It's a bit of a 'Foreigner in China' stereotype to whine about how absurdly difficult it is to go to e.g. the bank or a hospital as a non-native because it happens so often.

Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by imajoo on Monday August 19, 2024 @12:01AM (#41287701)
The character limitation is also a problem in Korea. The thing that makes it worse is that your name on your alien registration card (think Green Card) is used to open your bank accounts. If they don't match you'll have a hell of a time doing any sort of online or mobile transaction since the systems are tied together. Only recently some banks have recognized this as a problem and extended the number of characters allowed.
Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by autumnstwilight on Monday August 19, 2024 @01:09AM (#41287986)
Japan also has this issue.
Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by waterproof on Sunday August 18, 2024 @01:37AM (#41280337)
USAA had a similar issue for some time, but with the password field. One interface (web or mobile, I don’t remember) would silently truncate the password. You couldn’t even tell it was being truncated because it was all **!
Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by EduardoBautista on Sunday August 18, 2024 @03:08AM (#41280695)
Actually, looking at the credentials in 1Password for this bank, my issue was with the password field, so similar to USAA. Mobile had a 15 character limit.
Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by fragmede on Sunday August 18, 2024 @03:18AM (#41280738)
I had that problem with a major US bank. Copy and pasting or retyping the password worked, because doing so hit the client side JavaScript that truncated the password. If the password manager filled it out, it wouldn't work because it bypassed that JavaScript.
Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by MSFT_Edging on Sunday August 18, 2024 @11:02AM (#41282788)
At some point paypal had a character limit on the password, but wouldn't warn you when you set the password. So I set a long password, and was denied entry when using it, until i figured out the limit.

Ex, i created the account with "mySuperAwesomeHunter2Password".

But the limit was somewhere in the middle so I had to enter "MySuperAweso" to log in.

They fixed it since then but I stopped using it except as a payment proxy. No money will ever be stored on paypal after that nonsense.

Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by dilawar on Sunday August 18, 2024 @02:42AM (#41280598)
This is nothing.

My bank account (HDFC india) starts with 00. Dare send it to any accounting person who will copy paste it into an excel sheet and bang.. the prefix 00 is gone. Now they will complain that your account details are wrong. Took me a few months to figure out what was really going on.

Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by ctxc on Sunday August 18, 2024 @08:22AM (#41281918)
Not to mention the disabled copy pasting.
Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by ryoshu on Sunday August 18, 2024 @09:08AM (#41282152)
Had a similar thing happen when my small regional bank was rolled up through a couple M&A's and I have 00s and my regional account number remained. If I ever have to call them I have to explain the situation because when I start with 0s they don't believe me.
Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by toss1 on Sunday August 18, 2024 @10:26AM (#41282577)
Yup.

Here in USA, Citizen's bank, iirc a subsidiary of Royal Bank Of Scotland, has had a bug for years that prevents me from changing my password. The only way to do it is via a series of tech support calls, despite the fact that they've had an open ticket for years. The source of the problem? Can't do it on an account where the email address (not the username) has a less-than-3-character-long name, as in "[email protected]". I own a small company and setup initials for easy-to-use email addresses, and found zero problems anywhere else in the world. But these clowns seem to need "abc@..." to function correctly.

I've found bankers tend to not be the brightest bulbs in the box, and this is but one example.

Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by hypercube33 on Sunday August 18, 2024 @12:22PM (#41283272)
Up until a few years ago WF didn't process case in passwords. you could set your password to Hello and log in with hello
Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by vonrosen2000 on Monday August 19, 2024 @12:39PM (#41292519)
I think Bank of America doesn't allow exclamation mark in password. It is strange. One of the largest banks on earth.
Re:Flaw has Microsoft Authenticator overwriting MFA accounts... by DarkUranium on Thursday August 22, 2024 @05:38PM (#41324595)
My own bank used to have [A-Za-z0-9] passwords with a character limit + browser certificates. I thought the former was pretty bad (and it's always alarming, as it tends to imply they're storing it in plaintext if they even care what the characters are ...).

Then they got bought by another bank ... and now, they require *6-digit* PINs/passwords + no certificates. Yes, there's 2FA involved now, but seriously, 6 digits?