How can a virus get through the virus scanners?
When a new virus is released onto the Internet, there is a small window of time where the virus scanner manufactures don’t have a virus ‘signature’ which is used by the Monash virus scanners to detect and delete virus infected emails. In this time it is possible that a virus could get through if the file attachment name isn’t on the restricted list. It takes Anti-virus vendors time to create new “signature” for each new virus, typically this takes between 2-8 hours. During this time, the antivirus scanning software won’t recognize the new virus. This is why ITS strips some attachments commonly used by viruses, but not commonly used by people.
