I work in fraud investigations- there is no real way as far as I am concerned, of protecting your identity. They all claim they can, but I still see fraud happening. If the crooks cant do it one way, they seem to find another.
Just be careful with what you do:
Shred all your bills, bank statements, any mail that has any personal info including your address on it, before throwing it out.
Never answer phone calls or email from your 'bank, 'credit card companies', 'paypal' or anyone else asking for your info. It's NOT really them!!
When eating in a restaurant or something like that, never hang your purse on the back of your chair! Keep it next to you or where you can see it.
Most places dont now, but if you use a credit card at an establishment that still prints the full account number, SHRED that receipt before you toss it and never leave it on a restaurant table or whatever.
When you pay for your dinner, tab, whatever, pay at the register and stand there while they run your card. Dont let them take it from the table and then bring your card back a few minutes later.
There are many other safety tips, but just make sure that your thoughts are if someone would be able to access any personal info in any way, and I mean ANY personal info. Crooks will even go through garbage to find info.
Be careful what you put on social network pages!