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 newest version of Sober has been extremely fast moving, and enterprises have struggled to update security systems with virus signatures in order to prevent virus-laden messages from getting through to end users.
To ensure maximum security, Panda WebAdmin Antivirus searches for updates both of the product and of the virus signatures file at startup and at regular intervals, which are extremely easy to configure.
And, for zero-hour protection, just a few mouse clicks from any unwanted process will create a virus signature, add it to the database, and push it out to all clients on the network.
However, with these packer tools, the resulting compressed executable will bypass any static anti-virus scanning engine because the virus signature is changed and the anti-virus software will not recognize it.
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.
Other comments include, "It downloads virus signatures daily and scans files on access" and "VirusScan 2006 is easy to use.
A year ago the user was told to keep their virus signatures up to date and hope for the best.
Network Box proprietary systems have the ability to use passwords found in email content to decrypt and detect for viruses inside attached password-protected ZIP files; using a full set of more than 83,000 virus signatures, heuristics and company policy blocks.
Computers should be scanned to make sure they are not already infected, and anti-virus software should be up-to-date with current virus signatures," said Jeff Minor, President of Easynews.