protection

No, but malware can be an issue. There is malware making the rounds in the form of MacKeeper / MacShield / MacDefender / MacProtector...

Mac OS X Snow Leopard and malware detection <--- SL only

How to avoid or remove Mac Defender malware <---- for Mac OS X 10.4, Mac OS X 10.6, Mac OS X 10.5

Security Update 2011-003 (Snow Leopard) <--- improves security

And read here. http://www.reedcorner.net/guides/macvirus/

Never accept unsolicited offers from the internet.

If you want to run a/v software on your Mac regardless, both Sophos or ClamXav are recommended.

Free Antivirus for Mac - Sophos Anti-Virus for Mac Edition

Apple - Downloads - Networking & Security - ClamXav

Keeping your system software up to date should help.

Carolyn,

Please change your link for ClamXav to http://www.clamxav.com as the Apple link still has an obsolete version posted. The developer has attempted to get this fixed, but Apple changed something about the process, so he hasn't been able to.

TIA...

Thank you so much for the heads up!

Beautiful day in the bay 😎