Some people make the assumption that Macs can’t get malware, that it’s somehow a Windows-only problem. Unfortunately that’s not the case, any computer can get malware such as viruses and trojans (read here for some examples). And there are some companies that already make antivirus software for Macs.
Further evidence of the need for antivirus software on Macs is given by Apple themselves. They’ve made their own antivirus software for the latest version of OS X (called Snow Leopard). This built-in antivirus software is very limited at the moment:
- It can only scan files downloaded from a small number of programs (so it doesn’t scan “everything”), and
- At the moment it can only detect 2 trojans
If you’re a Mac user you can read more here. My point is that you should do everything possible to protect your computer from malware, scams, etc. Assuming that your computer is somehow superior and invulnerable just doesn’t cut it.