03-30-2012, 02:17 AM
Well, there are a small number of Trojan horse malware files out there, such as the one mentioned by Paul F. here - http://forums.macresource.com/read.php?1,1340824. Several anti-virus or malware scanners are available, some for free. I personally use the free for home use download from Sophos, http://www.sophos.com/en-us/products/fre...ition.aspx. You could download one and scan the system before migrating from his old system. Others may post their choice of anti-malware software. Mostly useful for catching Windows or MS Office malware in files to not pass it on, but the occasional piece of OS X malware does get stopped.