My wife had this happen to her about 10 years ago.
They kept all of their time cards at work in a rack on the wall. On their cards were....you guessed it, their fucking SSNs!
Anyhow we found out when we bought a vehicle that she had a credit problem. We have never even bounced a check. Not one in 26years and our credit is otherwise impeccable(I got a 3.8% rate on my last mortgage). Searched into it and there were 2 maxed out and unpaid CCs. No one would help, no one would look into it, no one would do shit. My wife spent days on the phone tracking it all down and found out it was her coworker. The info would have taken one phone call from anyone in LE but no one would give her any info. Seems the thief had more rights and protection than we did.
We got it all cleared up. DA wouldn't press charges even though my wife wanted to. As long as she paid them off no one cared. In all likelihood she did the same to someone else in order to pay those off. A search on the state court site revealed numerous credit problems and issues.
DA did offer to arrest my wife though for swearing over the phone!
Funny thing was, this bitch tried to insert herself into our lives telling my wife she was her best friend, blah, blah, blah. My wife worked at the medical college I went to and their office was right by the wieght room there so I would pop in. She used to come out and hit on me. I told my wife not to trust her and not to let her into our lives. She got the drift eventually or it could have been far worse. I never did tell her the bitch was hitting on me though. It would have probably resulted in her getting fired and there was no way I was hosing anyone else especially a backstabbing skank like her.
She has something placed on her credit now where no one can take out a CC on her name without first contacting her. We are careful in how we handle our bank accounts also. No ATM or debit cards. I do some internet transactions and haven't had any problems with those thus far but have had to get on my CC company from time to time about just increasing our credit line without telling us. I keep a low limit. I only need them for short term as we NEVER carry a balance.