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Community Champion

Credit Cards/Phishing/etc.

Just thought I would share this, it popped up in my Linkedin feed.

 

We were talking about phishing attempts and credit cards.  I think this is a good explanation of how credit card numbers work and determining if the card is valid.

 

https://blog.paylane.com/cracking-the-credit-card-code/

 

Of course, I did check that my cards were valid (LOL).

 

Regards

 

d

 

1 Reply
Community Champion

Re: Credit Cards/Phishing/etc.

 

Well, I've never owned credit cards, so I just had debit cards to try this with. I made us of 2 valid ones, but both yielded numbers that weren't divisible by 10 --- so I assume this doesn't work with debit cards.

 

Anyway, the article talks about the gauging validity, but the technique --- assuming it works --- would only show whether a credit card number is genuine, since validity may be affected by the expiry date or the holder cancelling it. 

 

Here's another place they talked of the algorithm that's used.

 

 

Shannon D'Cruz,
CISM, CISSP

www.linkedin.com/in/shannondcruz