http://www.theregister.co.uk/2005/09/19/symantec_threat_report/
Symantec has attacked the perceived security advantages of Firefox and Apple Macs by drawing unfavourable comparisons with Microsoft's software and describing Mac fans as living in a "false paradise".
Graham Pinkney said:switching from IE to Firefox as a way of minimising security risks was no longer valid advice. "Cross-site scripting attacks have been used to attack more vulnerabilities in Mozilla browsers over the last six months than IE,"
Symantec said:"Mac users may be operating under a false sense of security as a noteworthy number of vulnerabilities and attacks were detected against Apple Macs operating system, OS X," Symantec said, reflecting comments in the previous edition of its threat report that OS X was an emerging target for attack.
"While the number of vendor-confirmed vulnerabilities in OS X has remained relatively constant during the last two reporting periods [12 months], Symantec predicts this could change in the future. Symantecs analysis on a rootkit (OSX/Weapox) reveals it is designed to take advantage of OS X. This particular trojan demonstrates that as OS X increases in popularity, so too will the scrutiny it receives from potential attackers."