Author Topic: AVAST RESIDENT SCANNER is using Heuristic analysis?  (Read 14034 times)

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Offline Lisandro

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Re: AVAST RESIDENT SCANNER is using Heuristic analysis?
« Reply #15 on: July 17, 2008, 04:20:34 AM »
like eset threatsense technology
Vlk posted elsewhere doubting the efficiency of eset nod32 detection nowadays...

But leemar, aren't we and Alwil team answered this already? ???
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Offline Vladimyr

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Re: AVAST RESIDENT SCANNER is using Heuristic analysis?
« Reply #16 on: July 17, 2008, 05:03:03 AM »
but all anti virus software should include heuristic analysis (not just heuristic but a good one) like eset threatsense technology. false positive is very minimal. but my question is if avast uses only definition base detection how come it has so many false positive lately? supposed to be all definition included in it's database are all known threats.

Bingo! It could be that ESET's terminology is confusing the issue for leemar.

In describing 'Threatsense' on their website, they explain well how their products incorporate "signature", "sophisticated heuristic" and "generic" detection. But then they go on describe what I would call behaviour analysis as "advanced heuristics".

"ThreatSense also uses an advanced heuristics engine to dramatically extend detection capabilities - far beyond those of conventional signatures. It actually decodes and analyzes executable code in a protected virtual environment. Doing so allows it to identify the intended behavior of today's continually evolving threats - not just viruses and worms, but bots, rootkits, and other trojans."

IMO this is not what the word heuristic means... though it may well have changed while I wasn't paying attention;D

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Offline DavidR

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Re: AVAST RESIDENT SCANNER is using Heuristic analysis?
« Reply #17 on: July 17, 2008, 02:41:08 PM »
That's why I said earlier when saying avast version 5.0 isn't going to have Heuristics as there is a fairly clear definition of what Heuristics is. So what avast intends (more a behavioural function from what has been gleaned on the forums) wouldn't fall within that definition and neither would the description of ThreatSense.

So the definition of heuristics hasn't changed whilst you weren't paying attention ;D or I wasn't paying attention either ;D
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