swatty
Senior Member
Grumpy old Man
Posts: 256
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Post by swatty on Nov 22, 2010 15:21:43 GMT
It that is true how large does the database of viruses have to be? Some viruses are 10,000 bytes in size (large ones) If the average is one tenth of this size then we need 1,000,000 times 1000 bytes. i.e. one Terabyte just for the definitions. My hard drive is not that large. That is why Anti-Virus software uses signature files which are built of small code snippets or behaviour based algorythms see link below antivirus.about.com/od/whatisavirus/a/virussignature.htmThis keeps their size down to a manageable level, especially as many viruses are build around common blocks of code, so therefore one signature can identify many viruses Hope this helps Simon
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Post by Forum Cat on Nov 23, 2010 14:35:22 GMT
Ah! Most helpful
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Deleted
Deleted Member
Posts: 0
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Post by Deleted on Nov 23, 2010 21:15:44 GMT
I know... I'm sure there's some conspiracy theory there........ I always think that it's ironic that the very first Virus was on the Apple II. Once bitten huh!
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