Antony Stone wrote:

On Thursday 08 January 2004 12:21 pm, Payal Rathod wrote:


Hi all,
Recently I noticed that Norton AV clears more than 60,000 viruses,
maybe other virus scanners also have similar numbers, why do we have a
very less number?

2. Many vendors count minor variations in viruses as multiple signatures, whereas ClamAV often catches several variations with a single signature. Again, the higher number looks good for marketing, even though it really means the product is ratehr less efficient at detecting the viruses and has to search a bigger database of signatures to achieve the same effect.

Another area where numbers are pumped is in application exploits and other non-virus related signatures. Desktop AVs will count signatures for things such as Outlook MIME vulnerabilities, spyware, adware, etc. Some will trigger "backdoor" warnings on tools that have been commercially designed for the purpose of remote administration as well, under the guise that users will want to be alerted if such programs are found on thier systems.


DS


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