Recently received inquiries from two clients whose Macs have been compromised by a notorious piece of malware known as Mac Defender. They were apparently tricked into clicking a web banner that pretended to scan their system for viruses and were wondering how they can fix the problem.
In conducting a web search on how to get rid of Mac Defender, I found the following solution that I’ve excerpted below:
Remove Mac Defender (Uninstall Guide)
Posted by Grinler on May 9, 2011
What this infection does:
Mac Defender is a fake rogue anti-spyware program that for the Mac OS operating system. This infection is spread through the use of advertisements on web sites that pretend to be fake online scanners. When these fake scans are finished, it will state that your computer is infected and then automatically download the Mac Defender program onto your computer. Once the program has finished downloading, the installer will start and prompt you to install the program.
Click here for full instructions on how to remove Mac Defender.