Is your birth date on your Facebook or another social network profile? How about your school or hometown information? And are you one of those individuals who also uses private/personal information as an answer to security questions for online banking and online accounts? Are you getting where I'm going with this?
Cyber criminals can harvest all this information from your profiles if you are not hiding these private details from strangers. Also note that you face risk even if you are sharing this information only with friend if the friend's account gets compromised.
So how can you protect yourself?
Check your privacy settings. Determine who is allowed to view what information. Hide details from everyone who doesn't need to know personalized information. Be careful about adding people whom you don't know as friends. Think before you share any private information online including vacation plans, dinner out plans, and anything that compromise your security.
When was the last time you checked your Facebook privacy settings? I checked mine settings again today. Make this a recurring task on your calendar to make sure that any new additions to your friends or followers are thoroughly checked and your information remains as private as possible.
Identity threat is real. Cyber criminals are combing online websites to find their next victim. Don't become one.