Professional networking site LinkedIn and dating site eHarmony confirmed yesterday that millions of user passwords have been stolen from their databases and posted on the Internet. If you are a user of either of these services, it's critical that you change your password immediately on these sites, as well as any other sites for which you use the same password, especially for email, banking or other sensitive data.

The breach was identified when the hacker(s) posted the list of 8 million encrypted passwords to a hacker forum for help with breaking the encryption code. Sophos security is reporting that more than 60% of the passwords have already been cracked.

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If you have an account with any of this site, change all you passwords.