“Recognition of malware is dependent upon an analyst having already analysed the behaviour of the malware and extracted an identifying signature,” Dr Brand said.
If the new malware is significantly different to any known malware, antivirus software is unlikely to recognise the threat until the malware has disabled it, say the scientists.
Dr Brand says antivirus software is already struggling to keep up with the growing volume of malware rapidly appearing on the internet, more than 75 million by the end of 2011.
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Article source: http://www.rediff.com/business/slide-show/slide-show-1-tech-malware-re-birth-a-new-threat/20111212.htm
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