Fake Mac Defender AntiVirus software

A new threat that pretends to be a legitimate Mac AntiVirus product called MACDefender has been discovered on compromised websites. Typically the threat is found whilst searching for popular topics and images on the internet. Compromised websites contain JavaScript code that runs and displays a Windows-style scan of your computer.

FakeScan2
FakeScan

After closing the alert a zip file named, BestMacAntiVirus2011.mpkg.zip will be downloaded, which extracts a Mac Installer meta-package called MacDefender.mpkg. Unfortunately the only thing that this software is like to remove are your credit card details!

As a general rule it is best not to respond to any prompts that you receive whilst browsing the internet. If you do require antivirus software, or anything for that matter, then it’s best to do the research yourself and choose a well known legitimate company.

ProtectMac AntiVirus customers are protected against this threat
OSX.MacDefender.A.

Note: There is a legitimate Mac antivirus product named MacDefender