http://www.consumersunion.org/campaigns/learn_more/003484indiv.html -- there you'll find what your state requires for a FREE "credit freeze" (meaning NO ONE can obtain any credit information, via the big three credit agencies, and try to rip you off). different states SET the amount that the credit agencies can charge you (typically $10), and you might even be able to do it via a SECURE online form
if you are just getting started in life... it may be a PITA to unfreeze/unlock every time you want to open a new account (buy a car, rent something, etc.)
but if like me, EVERYTHING is paid-off (including cars, house, already established lines of credit)... then putting a FREEZE on your credit information is a wise step (IMO)
2. doing the above pretty much PREVENTS anyone from opening a new line of credit... using your credit information... but it does not stop someone from using your existing accounts. however; every single credit card I have, stipulates that I have ZERO liability for unauthorized use of my credit card number(s)... so long as I am diligent and report theft of my card (or observe unauthorized use of same, through my own diligence... i.e., frequent observation of my online CC account via their web site)
3. CC companies offer additional "protection, insurance, and assistance" should anyone steal my identity... but they typically charge about $12/month for such protection (IMO, that's a rip-off, as are services such as "lifelock").
if anything goes wrong (you lose your CC, you observe unauthorized use of same, your identity gets stolen, etc.)... be sure to file a POLICE REPORT (that's the first step toward recovering).
4. EDUCATING oneself is the best way to avoid serious problems... I've collected a few resources along that line, and linked to them from my web site, on this page:
http://services-a2z.biz/karlsgoodies/goodies-002.htm#advocacy once it loads, follow these links:
Identity Theft: | aarp.org | ftc.gov | privacy.org | privacyrights.org | SafeKids | USPS
Lastly, I am NOT a professional/expert... but I've been around for a long time (nearing 60)... and I've been online since the early 1990s. I've never had the first problem. But just like with HEALTH or LIFE insurance... CCs and others (such as "life lock")... try to PREY ON YOUR FEARS (i.e., planting the seed that something is gonna happen... then selling you a product in case it does). You've got to believe that THEY are not fools... statistics indicate that the ODDs are in their favor... and they're making TONS of $$$$$ preying on your fears (or they wouldn't be offering such services).
Bottom line? It's up to you to decide whether or not you want to educate yourself, take the necessary steps to prepare, and then *IF* it does happen to you, YOU will deal with it... OR ... pay someone else to "watch out for your interest" (and then PRAY that they will actually BE THERE, if something happens).
...just my 2cents