Graham Cluley

Graham Cluley
Graham Cluleyis a British security blogger and the author of grahamcluley.com; a daily blog on the latest computer security news, opinion, and advice...
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In 20 years, viruses have moved from floppy disks to file viruses, to e-mail viruses, to Internet worms, to targeted Trojan-horse attacks.
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This is the first real virus to infect the Mac OS X. It's always been presented and marketed as a much safer operating system.
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It's disturbing to see a second worm for Mac OS X so soon after the first, but it should be remembered that this is only two compared to well over 100,000 viruses for Microsoft operating systems.
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It is probably the biggest virus since the Love Bug. It went quiet overnight but took off again this morning when people started opening their e-mails.
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The Mytob worms have made a significant impact on the virus outbreak charts this year, so anything which may prevent future variants from being developed and released must be welcomed.
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A lot of people are stuck in the 1990s, with their image of a virus writer as a kid eating pizza in their bedroom. In fact they are now much more serious, and much nastier.
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They don't need to go to all that extra effort to write a virus for Macs. There are plenty of unprotected Windows computers out there.
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This is the first real virus for the Mac OS X platform. Apple Mac users need to be just as careful running unknown or unsolicited code on their computers as their friends and colleagues running Windows.
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However, when examined by an experienced virus analyst the similarities become clear. It appears that whoever wrote Zotob had access to the Mytob source code, ripped out the email-spreading section, and plugged in the Microsoft exploit.
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Compare what those viruses did to what happens today: If a worm steals your bank information or hacks into your accounts, that is it. You have been robbed.
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It's funny to us as we're so used to worms and viruses being bad news rather than making the world a better place.
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If we joined, we couldn't share any identifying information about MARA members, so if we found someone in the group publishing virus source code, or co-authoring articles with known virus writers, we couldn't divulge that information.
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It's important to consider the amount of hacker activity associated with a particular flaw. And let's not forget that the vast majority of computer viruses are written for Windows computers.
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If he had been scanning his email for viruses he would never have received the message from the Sober worm. If jailed he'll have plenty of time to reflect on whether he should have believed everything that was sent to him via e-mail.