Security Update 2011-003 (Snow Leopard ONLY - Really, Really?!?!?!)

Question

What anyone who doesn't have Snow Leopard isn't at risk of getting tagged by dreaded "Mac Defender" Trojan Horse???
Come Apple Snow Leopard isn't the only OS that is at risk, you really should make this avaible to ALL Mac users, not just those who have purchased and installed Snow Leopard.

Answer 1

Eric Schwarzkopf wrote:
What anyone who doesn't have Snow Leopard isn't at risk of getting tagged by dreaded "Mac Defender" Trojan Horse???
Come Apple Snow Leopard isn't the only OS that is at risk, you really should make this avaible to ALL Mac users, not just those who have purchased and installed Snow Leopard.
It would apparently have been a much bigger undertaking  to provide similar functionality for earlier systems. You'd probably have to start from scratch, whereas for Snow Leopard it's a small update to a pre-existing feature. This isn't to say, though, that Apple shouldn't have provided something for earlier systems anyway.
From
About Security Update 2011-003:
Description: The OSX.MacDefender.A definition has been added to the malware check within File Quarantine.
The "File Quarantine" check for "potentially unsafe files" began with OS X v10.5, but the addition of a specific  "malware check" feature using a list of known malware was new in Snow Leopard.
From
About file quarantine in Mac OS X v10.5 and v10.6:
Snow Leopard checks for malware
Mac OS X v10.6 Snow Leopard builds upon the existing unsafe file type check by also checking for known instances of "malware", or malicious software. When you open a quarantined file, the file quarantine feature will check to see if it may include known malware.