79% believe Mac will be targeted more often in wake of Leap-A Mac OS X worm.

A web poll of more than 600 computer users, conducted by Sophos in the wake of the discovery of the first Mac OS X worm, has revealed that 79% believe Apple Macintoshes will be targeted more in future. However, over half of those polled said they did not believe the problem would be as great as for Windows. SophosLabs advised users of the discovery of the Leap-A worm, which can spread via the iChat instant messaging system. "The bad news is that most people think the situation is going to get worse for Macintosh users, and more threats will be targeted against the Apple community. 'The correct response is to remain calm and take sensible measures to protect your Mac computers in future," "The Leap-A worm isn't in itself a significant threat, but it should act as a helpful reminder that malware can be written for any computer and that the best protection is through sensible best practise, firewalls, security patches and anti-virus technology. Mac users cannot keep thinking that they are invulnerable to these threats. "Some members of the Apple Macintosh community have claimed that Leap-A is a Trojan horse, and not a virus or worm, because it requires user interaction (the user has to receive a file via iChat, and manually choose to open and run the file contained inside).

However, this is not the definition of a Trojan horse. A Trojan horse is a seemingly legitimate computer program that has been intentionally designed to disrupt and damage compute--activity. Importantly, Trojan horses do not replicate or have any mechanism of spreading themselves. They have to be deliberately planted on a website, or accidentally shared with another user, or spammed out to email addresses. Trojan horses do not contain any code to distribute or spread themselves, viruses and worms do. Leap-A is programmed to use the iChat instant messaging system to spread itself to other users. As such, it is comparable to an email or instant messaging worm on the Windows platform. Worms are a sub category of the group of malware known as viruses.

www.sophos.com