
Supposedly you need to register for something and a valid Identity Number (מספר זהות) is required. What would you do?
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Or the actual photo of someone's id card:
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Or full credit card information.
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.. Nah, just kidding. I won't be surprised if some wisely crafted google query could get you even this though.
For a full personal information however there is nothing better than a good old resumes.
http://www.google.com/search?hl=en&q=%D7%AA.%D7%96.+%2B+%D7%A7%D7%95%D7%A8%D7%95%D7%AA+%D7%97%D7%99%D7%99%D7%9D
Most of the them contain more than enough information for a successful identity theft. This is obviously not some local phenomenon and happens all over the world. What sets Israelis apart however, is an overwhelming tendency to include ID numbers and helluva other personal information.
Fresh from college applicants tend to do this to fill their otherwise empty resumes, some search for jobs in government/military sector. Another source of the problem is recruiting agencies. Upon application you usually will be asked for ID number. Sole purpose of this is to ease applicants tracking in their internal database. The problem is that some agencies decide to spice up the resume and add an id number, among other things.
Anyway, next time some your friends decides to put his or hers CV for public viewing, remind them, for example up to what degree exactly the ID card is checked for validity at the bank on opening a new account.