Fact #2 - Macs CAN get Malware and Spyware.
Any anti-virus program you purchased or downloaded for free is just a waste of space and memory.
Kaspersky, Sophos, Norton for Mac, Comodo, Avast - just to name a few.
The so-called "FBI MoneyPak Virus", which pretty much locks up your computer is NOT a virus - its Malware.
Do not ever pay the amount they are asking for!!!! Its a scam and your computer will not be unlocked afterwards.
Malware and Spyware is a whole different ballgame. You and your mac are not immune to it.
Your MacBook or iMac can get easily affected by spending too much time on FaceBook, YouTube and adult oriented sites.
Depending on your choice of browser and extensions, you might be inviting more unwanted guests than you are willing to deal with.
Those programs can slow down your computer, can cause crashes, add a variety of pop-ups to your daily browsing and many other things.
My App of choice, to keep my MacBook Pro free of those issues is AdwareMedic. Its FREE (Donations welcomed!), its fast and very thorough.
Run it once a week and you and your Mac will be happier in the long run.
Unfortunately to get rid of the "FBI MoneyPak Virus", it requires a little bit more, but no worries, the problem can get resolved.