Apple released a software update for OS X on Wednesday, version 10.5.8, that patches a number of security holes. The most serious appears to be one that would allow a hacker to use a specially programmed image file to execute code on your system. The patch also fixes flaws in Safari that would, among other things, allow a hacker to direct you to a malicious website while keeping the original website URL in the browser bar. Information about the update can be found here.
We highly recommend that everyone keep their Apple (and Windows PCs , too) set to receive automatic software updates. Instructions on how to keep your Apple up-to-date with the latest software can be found here.
These updates should also be a reminder that no system is completely safe from viruses, trojans and other malware. Macs may be less prone to these issues than Windows machines, but they are not immune. Security suite subscriptions from Norton and Trend Micro are only around $40 per year, and it is money well spent.