On Jul 19, 2007, at 7:50 PM, John Park wrote: > are macs vulnerable to spyware? Is there a recommended program to > guard against it? Macs are vulnerable to spyware, viruses, Trojan Horses, etc. It's just that OS X was designed with security in mind, and Apple has been good about keeping up with security patches. As a result, there hasn't been much successful malware written for OS X. As for spyware, it depends on what you mean by the term. There are applications that phone home, but they usually do so for innocuous reasons, such as checking to see if there is an update. There are cookies that do things like keep track of how often you visit certain Web sites. Some folks consider that spyware, others don't. There is no seriously malicious spyware that I know of that can install itself on your Macintosh without you knowing it when you visit a Web site, or via e-mail. (Windows users really wish that they could say the same. Over 91% of computers running Windows are infected with Spyware! http://www.mcafeesecurity.com/us/about/press/mcafee_enterprise/ 2004/20040212_085446.htm ) There _is_ spyware for the Macintosh that requires that the "spy" have physical access to your computer to install it; but it is extremely unlikely that you will encounter it just because of the physical access requirement. There was an unsuccessful attempt at a Trojan Horse that was supposed to install spyware on your computer a year or so ago. So, for now, there is nothing to be particularly concerned about. There are a number of anti-spyware programs available for the Macintosh. But there is no reason to have them. They are just making money off of your fear. MacScan http://macscan.securemac.com/ Internet Cleanup http://www.allume.com/mac/cleanup/index.html HenWen http://seiryu.home.comcast.net/henwen.html There is one, Little Snitch, that some folks like. It acts as a reverse firewall. That is, it blocks all outgoing communication from your Mac without your allowing it, so that if an application phones home, or if a copy protected application checks for other unauthorized copies of that application on your network, it blocks that. People pirating software, and the paranoid, love Little Snitch. http://www.obdev.at/products/littlesnitch/index.html ___________________________________________ Randy B. Singer Co-author of The Macintosh Bible (4th, 5th, and 6th editions) Macintosh OS X Routine Maintenance http://www.macattorney.com/ts.html ___________________________________________