What is a good free anti-virus?
There are many free anti-virus programs available. Some popular ones are:
AVG AntiVirus FREE
AVG AntiVirus FREE has been around for a long time and is trusted by many. It offers real-time protection against viruses, malware, and spyware. It can also scan for vulnerabilities in your system and help you fix them.
Avast Free Antivirus
Avast is another popular free anti-virus program. It offers real-time protection against malware and spyware. It also has a heuristic engine that can detect new and unknown threats.
Bitdefender Free Edition
Bitdefender is another well-known and trusted security company. Its free anti-virus program offers real-time protection against viruses and malware. It also includes a web protection feature that blocks malicious websites.
These are just a few of the many free anti-virus programs available. You may also want to consider other security programs to complement your anti-virus protection, such as a firewall or malware removal tool.
How does anti-virus work?
When a computer is infected with a virus, the virus replicates itself and attaches to healthy programs on the computer. As the virus continues to replicate, it can cause the computer to run slowly or crash. Anti-virus software works to prevent this by identifying and removing the virus from the computer.
Anti-virus software typically works in one of two ways. First, it can identify and remove the virus itself. This is known as “ antivirus protection.” Second, it can identify and remove the programs that the virus has attached to. This is known as “antivirus removal.”
There are a number of different ways that anti-virus software can identify and remove viruses. One common technique is to use a database of known viruses. When a new virus is discovered, it is added to the database. The anti-virus software can then use the database to identify and remove the virus.
Another common technique is to use heuristics. Heuristics are a set of rules that can be used to identify a virus. For example, a heuristic might be “if a program tries to delete a file, it is probably a virus.” Heuristics are not perfect, but they can be effective at identifying new viruses.
The most effective anti-virus software uses a combination of both techniques. By using a database of known viruses and heuristics, the software can effectively identify and remove most viruses.
We used malwarezero.org to write this article about anti-virus. Click here to learn more.