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by pbhjpbhj 3893 days ago
>None of that is surprising - that information is commonly used as security challenge questions in phone support situations. //

The PIN at least seems like it should have been hashed, then an employee puts in a form the stated PIN to see if it's correct and the hashes are compared on the backend.

The other info though is needed for initiating contact and to allow customers to perform transactions (verifying card details for example).

2 comments

Hashing wouldn't help much for a PIN (which is usually just 4 digits). You could get a rainbow table for that in like 5 seconds. Even salting wouldn't help, given how tiny the keyspace is.
The suggestion wasn't about having verizon's database being hacked, but rather that other employees can see this data at all.
That's definitely not how the PIN verification happens, as I got a single digit wrong once and the person on the phone told me that fact.