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A comment on Mastercard DNS Error Went Unnoticed for Years. Parent comment

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...

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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.
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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!
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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.

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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
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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?
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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.
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