How exactly do the credit fraud alert systems "scan the darkweb" for a customer's matching SSN?

I don't understand how this works, and if it's safe.

If they keep a group of SSN to use it to scan dangerous sites for a match, wouldn't that risk backfiring and being more compromised?

Submitted January 31, 2018 at 12:48AM by milibili http://ift.tt/2Ep5NJ7