If you get an email from LinkedIn saying you need to reset your password, it's real. The social networking site has reported a data breach in which an undisclosed number of passwords were compromised.

"Members that have accounts associated with the compromised passwords will notice that their LinkedIn account password is no longer valid," Vincente Silveira, a LinkedIn director, wrote on the company's blog. "These members will also receive an email from LinkedIn with instructions on how to reset their passwords."

Silveira stresses there will not be any links contained in the email that informs you that you must reset your password. However, once you follow the initial step request password assistance, then you will receive an email from LinkedIn with a password reset link.