General Information
Macs are mostly free of viruses but can still get them, especially macro viruses. The Mac OS is based on UNIX and its permission system which helps prevent the spread of viruses. Generally that means every file and folder on a mac has an owner and a group assigned to it and they have certain "rights" to that file. If a virus doesn't have the rights to that file, then it cannot open or remove it.
Take note that you can pass on viruses to Windows users particularly through email so it is still good practice to have your virus software and definitions up to date.
Terms to Know
Virus - Software designed to spread by illicitly attaching copies of itself to legitimate software. Doesn't always perform maliciously but can slow down your computer.
Macro virus - Written with the macro language of an app (language that allows you to automate something). Usually infects Microsoft office apps.
Worms - Replicate like viruses but don't attach themselves to other apps. It replaces a legitimate program or file on your system and performs its mischief whenever you launch it.
Trojan horse - An intentionally destructive program masquerading as something useful like a software updater or game.
Virus software available
- Symantec (ECU has a site-license for this)
- MacAfee's Vires X
- Sophos Anti-Virus
- Intego Virus Barrier
- ClamXav - its noted for being the slowest to scan and not being able to repair files but its free
