A social engineer is someone who tries to trick you into providing information he or she is not authorized to have. The social engineer can use those information to access your computer, your personal bank account or spy on your computer. The social engineer might collect information that may seem harmless, such as your name, email address or your travel schedule. Much of this might be still usefull for these people.

Do you know how much these personal information worth in the black market? Accoring to Symantec Corp, the bank account information worth about $10 to $1,000; credit cards worth: $0.40 - $20; e-mail addresses worth about $0.83/MB to $10/MB while e-mail passwords worth between $4 to $30.

Listed below are five common schemes social engineers use to trick people into revealing personal information.
1. Impersonating
2. Phishing
3. Shoulder surfing
4. Eavesdropping
5. Dumpster diving

Never, never give out any personal information to unknown persons!

Read more about cybercrime at: http://www.symantec.com/norton/cybercrime/blackmarket.jsp