Ask HN: Why are my CVV numbers the same?

Posted by rfjedwards on Friday May 06, 2016 @12:51PM
from the ask-hn dept.

I have two Mastercards, with two different card numbers and expiry dates, issued at different times, from different institutions, with different variations of my name on each.

The CVV numbers on them are exactly the same.

Is it a one-in-999 coincidence?

Or is this exposing an exploitable weakness in however the CVVs are generated?

( 3 comments | 2 points | on HN )

Re:Ask HN: Why are my CVV numbers the same? by ocdtrekkie on Friday May 06, 2016 @12:55PM (#11645180)

I suspect it's a coincidence. I've never had two cards with the same CVV.

[ Parent | on HN ]

Re:Ask HN: Why are my CVV numbers the same? by PaulHoule on Friday May 06, 2016 @01:01PM (#11645212)

I had one which was 000.

[ Parent | on HN ]

Re:Ask HN: Why are my CVV numbers the same? by dataentryagency on Friday May 06, 2016 @01:01PM (#11645211)

Its just a coincidence.

[ Parent | on HN ]