BOSTON (CBS) – Do you have a LinkedIn account? If so, you probably should change your password.

According to CBS News affiliate CNET.com (via The Verge), a user in a Russian forum claims he has hacked and obtained almost 6.5 million LinkedIn passwords. LinkedIn confirmed Wednesday that some of their users’ account passwords were compromised, but they don’t know how many.

In response, LinkedIn disabled passwords for any compromised accounts and then issued instructions via email for those users to reset their passwords.

“We sincerely apologize for the inconvenience this has caused our members. We take the security of our members very seriously,” said LinkedIn’s Vicente Silveira.

If you did not receive instructions from LinkedIn but still wish to to change your password, go to http://LinkedIn.com and log in with your e-mail address and current password in the top right corner.

Once logged in, hover over your name and click on “Settings.” In a box near the top left, you’ll see your name, your email, and a spot for your password. Click the “Change” link next to the password field.

Then, enter in your old password once, and your new password twice below it.