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    • - Samker's Computer Forum
AV testing practices questioned
« on: 22. September 2007., 23:41:25 »
Professional and amateur tests criticised.

Last week, IT industry commentator and renowned anti-anti-virus writer Robin Bloor released a typically inflammatory article implying widespread corruption in anti-virus testing, suggesting that testing organisations within the industry are complicit in rigging test results to show AV products in a good light. This week, results of a supposedly independent test run live at a conference have been widely criticised for inaccuracies and sloppy methodology.

Bloor's article, entitled 'Is AV product testing corrupt?', quotes an anonymous contact 'high up in one of the IT security companies' as being 'suspicious' of results released by highly respected testing centre, and goes on to quote at length from another anonymous source, discussing the problem of test collections containing samples of dubious provenance and uncertain relevance. The article suggests that AV companies, providing samples to testing bodies for inclusion in test sets, routinely bias results by sending items only detected by their own products, and that test sets are riddled with corrupt, non-functional or simply non-malware samples.

At the LinuxWorld Expo in San Francisco last week, open-source gateway software producer Untangle presented an 'anti-virus Fight Club', testing a selection of products live on stage against a set of 35 samples gathered from the expo audience as well as the organisation's own inboxes. Kaspersky, Norton and open-source ClamAV were found to detect 100% of the samples, while others did less well, including one which scored less than 6% overall.

Since the release of the results, several commentators have pointed out flaws in the running of the test, not least the small sample set, the comparison of wildly different product types and errors in the settings used. The company running the test, as a vendor of a product using ClamAV, also appears to have an interest in the results, and having made its test set freely available online, risks charges of distributing malware.

'Testing AV products is an enormously complex and difficult business,' said John Hawes, Technical Consultant at Virus Bulletin. 'Amateur tests always run the risk of producing erroneous results, due to lack of experience in designing proper test procedures, in operating a wide range of products and, most importantly, in creating and maintaining a malware collection. The serious testing organisations spend enormous amounts of time and energy ensuring sets contain only valid samples, a process which was the central focus of the recent testing symposium in Iceland. The likelihood that the massive collections used by bodies like AV-Test or AV-Comparatives could be biased by individual vendors providing samples favourable to their own products seems pretty remote.'

'Of course, these days there is a lot more to security software than the ability to detect known malware in on-demand scans,' continued Hawes. 'The problems presented by testing heuristic and behavioural detection, as well as properly comparing protection offered by multi-level suites, are currently being worked on with great urgency across the industry, and hopefully firm and comprehensive methodologies for a wide range of testing will be agreed on soon. The question remains as to whether the average user can be persuaded to understand and take an interest in more complex and detailed results, as opposed to the simple percentage scores which the popular press currently demands.'

(Copyright by Virus Bulletin)

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AV testing practices questioned
« on: 22. September 2007., 23:41:25 »


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