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Security firms have split over the merits of a hacking contest aimed against anti-virus packages planned for August's Defcon conference.

Anti-virus firm Sophos reckons the exercise will serve only to increase the volume of malware in circulation, further taxing the resources of already hard-pressed security firms. However, net security services firm MessageLabs reckons the proposed Race to Zero competition has some merits as an exercise. It compared the wheeze to penetration testing against corporate networks.

Contest organisers said that the exercise will help to demonstrate shortcomings in signature-based virus detection. They also want to highlight weaknesses among anti-virus vendors exposed by the testing process, which will involve passing modified samples through a number of antivirus engines housed on a closed portal. Modified samples will not be released into the wild, the organisers explain. Results of the contest, a fringe event planned outside the main Defcon conference programme, are due to be presented during the annual Las Vegas-based hacking jamboree.

Despite these assurances some security vendors are less than impressed. Graham Cluley, senior technology consultant for Sophos, said: "The last thing the world needs is more malware. It's really disappointing to see that Defcon appears to be condoning the creation of malware in this way.

"If people really want to test the quality of different anti-virus products there are well established ways of doing it - and testing industry initiatives like AMTSO [Anti-Malware Testing Standards Organisation] are working hard at improving standards," he added.

Anti-virus firms will be obliged to add detection for malware variants created during the Race to Zero contest in order to ensure that they are not "dinged" in future tests which may include them, Cluley added. "That means that anti-virus researchers will be working at detecting malware that needn't have ever been created in the first place - analysing code inspired by the Race To Zero competition rather than working on detecting the latest malware written by criminal hackers.

"The end result is that detection databases grow in size, require more memory and take up more space on users' computers - all because Race to Zero thought this was a good idea."

Would-be participants in the contest are being encouraged to practice prior to the contest. Another bad idea, according to Cluley. "Race to Zero's website is linking to known virus exchange websites and suggesting that interested parties 'hone their skills' by practising on malware based on those sites. The opportunity for amateurs to make mistakes and release malicious code into the wild is worryingly high."

Other security experts are more sanguine. Alex Shipp, a researcher at web security firm MessageLabs, said at least some of the six stated aims of the contest are likely to be realised.

"I have found research along similar lines to the contest to be valuable in the past, so although the results of this particular contest might not be useful to me, the general idea of investigating my own product by trying to find and fix its weaknesses is valid and seems to me similar to the concept of pen testing," Shipp told El Reg.

Plans to mount the first Race to Zero contest were announced last week in a posting to a security mailing list. Organisers of the contest are yet to respond to a request for comment on the merits of the exercise.®

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