On Thursday 07 February 2002 15:51, Rivera Alonso, David wrote: > We wonder if our corporate FW with AV equipment should or not scan > TIFFs, as actually we try to scan them, but too big ones give many > errors (browser's timeouts) when trying to download them.
TIFF can't have a virus inside. No graphics format (data that is to be viewed using some sort of picture viewer) can contain viral data. There might be some data hidden in the picture (do some search on steganography if you're interested in that topic), but no TIF, GIF, BMP or JPG (etc) can transfer virii just as they are. Therefore, there's no need to check real graphics, but beware of things like bigboobs.jpg.pif and such pranks. Documents and unknown attachments should be scanned every time. -- Radoslav Dejanovic Senior Associate to Mayor's Office City of Zagreb, Croatia
