OSX/Inqtana.A is a Java-based worm that exploits the directory traversal vulnerability in the Bluetooth file and object exchange services in Mac OS X 10.4 (Tiger). (For details on the vulnerability, see CVE-2005-1333).

The Leap.A worm has no similarities and is not related to March 2007 reports of the oompa loompa song repeatedly playing on Windows PCs. For details and a fix of the Oompa Loompa song on startup problem, see the "Oompa Loompa Song on Startup" entry. The following description is of the MacOSX Leap.A worm:

According to Apple, Mac OS X Panther "offers breakthroughs in innovation, ease of use and reliability". Apparently, these breakthroughs are also providing fertile ground for malware. Since its release in October 2003, Panther has been found vulnerable to several possible exploits. The first involves executing code via the ID3 tag rendered when an MP3 file is opened in Finder. The proof of concept Trojan demonstrating this vulnerability has been dubbed MP3Concept by antivirus vendors. A second Trojan was discovered spreading on the P2P filesharing networks LimeWire and Gnutella and involved a fake Word 2004 demo that erases the user's Home folder.

Though fewer viruses have been written specifically targeted the Macintosh OS, Mac viruses do exist. Cross-platfrom threats, such as many of the Office macro viruses, can also be a problem for Mac users. The following antivirus software is well-suited to defending Mac users against the threat of viruses.

A mass mailing email worm targeting Macintosh computers directs the infected user's browser to an online archive of the popular U.S. television show, "The Simpsons".