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What is an Anti-Virus?
Anti-virus is a software (computer program) that scans files or your computer's
memory for certain patterns that may indicate an infection. The patterns it
looks for are based on the signatures, or fingerprints, of known viruses.
Once a
virus is detected in the wild, the Anti-Virus companies then release these new
patterns for your Anti-virus software to use. These updates come out daily by
some vendors. Virus authors are continually releasing new and updated
viruses, so it is important that you have the latest definitions installed on your
computer.
Once you have installed an anti-virus package, you should scan your entire
computer periodically. Always leave your Anti-virus software running so it can
provide constant protection.
TYPES OF ANTI-VIRUS PRODUCT
Depending on the installation method of the AntiVirus these can be in the following forms: OnAccess, On Demand, and hardware.
On-access scanners check for viruses when files or floppy disks are "accessed". They are designed to run
transparently in the background.
When well implemented they should be invisible to the user -
they shouldn’t even realize they are running an antivirus product until it intercepts a virus. It has been
our experience that on-access scanners are the most
popular type of anti-virus product.
What Should I do if I have a Virus?
Clean your computer with anti-virus software. If your computer is still not functioning and you have data you are concerned about recovering, consider hiring a trusted expert. Often data can be successfully extracted from an injured hard drive, but the process is complex and will involve another computer, special software, and a technician with a lot of experience in data recovery.
First Virus
Prior to 1988, most viruses were mere annoyances and virtually harmless. In January of 1986, the first virus written for Windows based PCs was born. Known simply as “Brain,” it was written by two brothers, Basit and Amjad Farooq Alvi, who were only 17 and 24 years old at the time. The brothers had created a heart-monitoring program, and it had come to their attention that pirates were distributing the software without the brothers’ permission. Brain was developed as a way to try to regulate and protect the software they created.
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