Tag Archives: sophos

Inside a Modern Mac Trojan

September 28, 2011

Mac malware is back in the news again. Last week, security firm F-Secure warned that it had discovered a Trojan built for OS X that was disguised as a PDF document. It’s not clear whether this malware is a present threat — it was apparently created sometime last year — but the mechanics of how it infects Mac systems is worth a closer look because it challenges a widely-held belief among Mac users that malicious software cannot install without explicit user permission.