First of all, sorry to hear about this. Hope this identity theft ordeal goes as smoothly as it can.
About a year ago or so, I got into the habit of checking my credit report. Both Experian and Equifax offer a deal for like $60 bucks a year that allows you to see your credit report and score. But mostly, I like how they notify you of ANY changes in your credit report via email. Any change.
When one of my creditors raised my credit line, I got an email informing me of this. Same thing when I cancelled a credit card.
Something to think about -- plus, it's a good way to see if anyone's opening up stuff in your name or under your credit.
More info (FYI):
Experian: https://www.creditexpert.com/
Equifax: http://www.equifax.com/
I know this message is "after the fact", but hope this helps a little.