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Tell HN: Automatic fraud detection is making my life hell

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341–350 of 406 posts

Re: Tell HN: Automatic fraud detection is making my life hell

#341
post #113

I have such immense disdain for Capital One and MasterCard for how they implement 3DS. I have been in Germany for 6 weeks. I have spent thousands of dollars between flights, train tickets, and hotels. Guess what I have to do every, single, time I buy a 3EUR train ticket? Receive an SMS on my American cellphone number. Their "solution" is to have a family member in the US add their number to my account, wake up in the…

If you do this multiple times a day, why not buy a monthly ticket?

Re: Tell HN: Automatic fraud detection is making my life hell

#342
post #137

Wrong assumptions programmers make about fraud prevention: -- A mobile phone number uniquely identifies a single person. -- Every person has a mobile phone number and they only have one mobile phone number. -- If a person's mobile phone number is associated with VoIP or Google Voice, that indicates fraud. -- Every person always has their mobile phone handy and it is always able to receive calls and SMS messages under…

The problem with many of these examples is that 99% of the time, it is a sign of fraud, and 1% of the time it’s a false positive. > If a person's mobile phone number is associated with VoIP or Google Voice, that indicates fraud. I’ve been using this heuristic (along with VPN and IP geo lookup) when screening job candidates after a massive influx of developers outside the US applying for US-only remote roles. I discov…

At some point every serious fraudster circumvents the protection and you are only blocking legitimate people.

OK this is probably an overstatement, but the 99% to 1% ratio must to be questioned though.

Re: Tell HN: Automatic fraud detection is making my life hell

#343
post #113

I have such immense disdain for Capital One and MasterCard for how they implement 3DS. I have been in Germany for 6 weeks. I have spent thousands of dollars between flights, train tickets, and hotels. Guess what I have to do every, single, time I buy a 3EUR train ticket? Receive an SMS on my American cellphone number. Their "solution" is to have a family member in the US add their number to my account, wake up in the…

This is your bank's problem. I am Australian, while roaming internationally incoming SMS is free. Next my bank sends in app notifications, not texts.

Re: Tell HN: Automatic fraud detection is making my life hell

#344

Earlier quoted context omitted.

I'll add another to that list: -- People will never have a physical mailing address that contains "funny" numbers like "000", "420", "69420", or "80085".

I used to live in Baltimore, where there are numbered streets that include ½ symbol streets, and worse, house numbers including ½ numbered houses.

I believe Galveston, TX has lettered half streets, example: 123 A ½ St

Re: Tell HN: Automatic fraud detection is making my life hell

#345
post #269

Wrong assumptions programmers make about fraud prevention: -- A mobile phone number uniquely identifies a single person. -- Every person has a mobile phone number and they only have one mobile phone number. -- If a person's mobile phone number is associated with VoIP or Google Voice, that indicates fraud. -- Every person always has their mobile phone handy and it is always able to receive calls and SMS messages under…

— everyone has a USA taxpayer ID

or even 'All American citizens have a USA taxpayer ID'

Re: Tell HN: Automatic fraud detection is making my life hell

#346
I am Australian of Indian origin who also visits family each year. I had no such issues you mention (except the google region change). My Australian bank allows cash withdrawal from ATM without forex fee, most shops in Tier1&2 cities I go to accept credit cards. Verification is through in app notification, I get a local SIM. My Australian SIM has free incoming SMS.

The only issue is some places now accept UPI payments only.

Re: Tell HN: Automatic fraud detection is making my life hell

#347

Wrong assumptions programmers make about fraud prevention: -- A mobile phone number uniquely identifies a single person. -- Every person has a mobile phone number and they only have one mobile phone number. -- If a person's mobile phone number is associated with VoIP or Google Voice, that indicates fraud. -- Every person always has their mobile phone handy and it is always able to receive calls and SMS messages under…

> Geolocated IP addresses always indicate the preferred and correct human language of the person on the other end.

This one is only tangentially related to fraud prevention. But I've never really understood this. Is the Accept-Language header really so inaccurate?

Re: Tell HN: Automatic fraud detection is making my life hell

#348
post #126

Earlier quoted context omitted.

If Schwab would fix their account security to allow plain TOTP instead of the scam that is Symantec VIP, I would have nothing but good... well, there was the two times, yes, two times in a month that I had to spend hours on the phone telling them to stop letting people randomly transfer securities into my account without my consent. They assured me that (1) it would be illegal for me to refuse the request to take bac…

> If Schwab would fix their account security to allow plain TOTP instead of the scam that is Symantec VIP Symantec VIP is just TOTP with a proprietary app/enrollment process. It has been reverse engineered [1], allowing you to use any TOTP app. I have been accessing Schwab and other banking sites this way for years. [1] https://github.com/dlenski/python-vipaccess

Oh this is great thanks. I've been annoyed by symantec for a long time.

Re: Tell HN: Automatic fraud detection is making my life hell

#349
post #113

I have such immense disdain for Capital One and MasterCard for how they implement 3DS. I have been in Germany for 6 weeks. I have spent thousands of dollars between flights, train tickets, and hotels. Guess what I have to do every, single, time I buy a 3EUR train ticket? Receive an SMS on my American cellphone number. Their "solution" is to have a family member in the US add their number to my account, wake up in the…

This is your bank's problem. I am Australian, while roaming internationally incoming SMS is free. Next my bank sends in app notifications, not texts.

Incoming international SMS is free for US carriers too. I use it all the time to receive one time codes.

Re: Tell HN: Automatic fraud detection is making my life hell

#350

Earlier quoted context omitted.

I'll add another to that list: -- People will never have a physical mailing address that contains "funny" numbers like "000", "420", "69420", or "80085".

-- No one was born on 4/20/69 -- Forced SMS based MFA should be used to protect logins for mobile phone accounts

>Forced SMS based MFA should be used to protect logins

I have now closed three remote banking accounts (i.e. no nearby physical locations), after they began requiring 2FA via SMS [which I do not participate/allow/text].

My most-recent bank is literally down the street from me so I can walk over when 2FA becomes ubiquitous. Such an annoying "feature".

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