I have reason to believe there might be a trojan on my mac, my isp keeps telling me that my system is sending out massive amounts of junk mail. I can't seem to find any reliable free anti-malware software for mac that isn't malware itself. Does anyone out there now of any freeware that would scan for trojans? thanks in advance for any suggestions PS please don't post saying that there is no malware for mac. I know viruses are rare and trojans are even more rare but the tech support at apple even recognize that their are some out there.