Remove MacDefender /Protect/Security Trojan

I have made an Automator workflow to remove all the known variants.

You can get it here: http://bit.ly/k5O8Ux

Alternatively you can follow the manual steps:

1. Open Applications > Utilities > Activity Monitor and quit any processes linked to MACDefender.
2. Delete MACDefender from the Applications folder.
3. Check System Preferences > Accounts > Login Items for suspicious entries.
4. Run a Spotlight search for "MACDefender" to check for any associated files that might still be lingering

Substitue "Defender" for "Security" or "Protect" depending on the variant you have.