
Problems like these are almost never caused by malware on the Mac.
#My mac is infected with malware windows
However, whatever you may be used to on Windows is irrelevant on the Mac.

There are all kinds of problems that people blame on malware, out of a mentality inspired by years of having many problems with Windows systems being immediately (and truthfully) blamed on viruses.

My computer is crashing/slow/doing something weird! Whatever the case, my Adware Removal Guide will help you find the cause and fix it.
#My mac is infected with malware software
It could also be the work of adware – a class of software similar to malware, but often considered to be less serious and not identified as malicious by anti-virus companies. This could also be caused by a compromised network, or an ad-supported public wifi network. It could simply be normal for the site, or the site itself may have been hacked. This could be caused by a number of things.

If a good anti-virus scanner doesn’t turn up anything, you’re probably not infected with anything, and your problems lie elsewhere. If, after reading this, you have reason to believe that you do have malware on your computer, use a scanner recommended in Do I need anti-virus software?. Browse through the descriptions of symptoms, and when you find one that matches, your answer will follow. If you think you have malware, you probably have some kind of reason for thinking that. Note that it is written on the assumption that you have read the Macintosh Malware Guide first. This FAQ, which is part of my Macintosh Malware Guide, will help you determine whether or not you should be worried. I hear this question all the time these days, and find myself often typing the same things over and over again. June 17th, 2012 at 9:29 PM EDT, modified
