Those affected by this attack have essentially been tricked into clicking on or pasting a URL into their browsers address bar sometime in the past. That URL takes them to a site that hijacks their computer. Some have blamed the hacking group anonymous for the attack, but at this time there is no clear evidence to connect the two. Facebook has been working hard to limit the damage by shutting down infected pages and deactivating infected profiles until subscribers have had a chance to remediate their infected machines. Facebook offers help on how to fix your account this through their help page. Some general advice on protecting your account and dealing with (or hopefully avoiding) this type of problem:
- Change your password If you notice strange activity on your account, change your password immediately. Use a passphrase instead of a word - a short sentence or string of words together without spaces in between. For example (don't use this example for your password): thisisastrongpassphrase. Make it even stronger by replacing a letter with numbers or special characters: th!s!s4strongp4ssphr4se. Your chances of being able to remember this are pretty good, and it is more difficult to crack than a short password.
- Remove third party apps Are you a Farmville player? Might be time to remove this and any other third party applications that you have installed on your profile.
- Run a virus scan Use a reputable anti-virus software application to scan your machine, after you update your virus definitions. The best advice if you are infected is to re-install your operating system from scratch. This is a real setback and a pain to get up and running, but it is the only way you can be (mostly) sure that you are clean.
Taking these steps can help protect your account.