virus signature


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virus signature

The binary pattern of the machine code of a particular virus. Antivirus programs compare their database of virus signatures with the files on the hard disk and removable media (including the boot sectors of the disks) as well as within RAM. The antivirus vendor updates the signatures frequently and makes them available to customers via the Web. See antivirus program.
References in periodicals archive ?
The GD scanner is comprised of a CPU emulator, a virus signature scanner, and an emulation control module (ECM).
The antivirus program would open each executable file on the computer and scan its entire contents for a current set of virus signatures.
After all, scanning for hundreds of virus signatures through hundreds of kilobytes of executable programs was a very slow process, especially on 4.
Search the bytes at location E for virus signatures.
In the past, we could detect viruses by searching for virus signatures extracted from the virus body.
A Sybari spokesperson said that users can protect themselves from the SoBig virus by updating their virus signatures or purging all e-mail messages containing the malicious code.
The solution works by passing all incoming and outgoing email traffic through the Sophos and-virus engine, which is updated several times a day in order that the most up-to-date virus signatures are available.
Innervue does not require updating, scanning or the distribution of new spyware or virus signatures.
However the virus signatures were nearly four months out of date - so naturally the reviewer went to update the signatures via the auto-update feature - which uses the Internet.
Calyptix Security uses new groundbreaking technology known as DyVax(TM), which completely eliminates the critical window of vulnerability between virus discovery and deployment of virus signatures.