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Regular signature updates during scan?
danq


Joined: 02 Jan 2011
Posts: 10
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Hi,

I was wondering what happens during an ongoing scan when the regular virus database updates happen. Does the update fail? Does it mess with the scanning process? Is it a security risk? Which database applies to the scan, the one at the time the scan started or does the detection ability change during the scan?

Thank you, Dan
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GuitarBob


Joined: 09 Jul 2006
Posts: 4370
Location: USA
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ClamWin loads the signatures into memory during a scan, so if a signature database update occured during a scan, it would work off of the signatures loaded in memory. I don't know if the entire database is loaded or if it is paged a bit at a time. I have downloaded new signatures while a scan was going on with no problems noted. A good programmer will put in locks on the data when/if needed. I suppose the detection ability could change during a scan if the signature data is paged and new data is inserted into a section that has not yet been brought into memory.

I do not think there is any security risk. If still worried, you could make automatic updates 5 minutes before the hour and scheduled scans on the hour.

Regards,
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Regular signature updates during scan?
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