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Antivirus was originally designed to detect and remove viruses hence the name.
However, with proliferation of other kinds of malware, antivirus started to
provide protection from other threats such as browser hijackers, ransomware,
keyloggers, backdoors, rootkits, trojans, worms, adware, spyware, etc. Some
products provide protection from other threats such as malicious URLs, spam,
scam and phishing, online identity (privacy), online banking, etc.
Antivirus software work silently in the background and receive updates
automatically. They provide scan engines that use virus definitions to examine
files and programs to determine whether they are infected by viruses. The virus
definitions are the key to identifying known viruses. They contain information
on what viruses, running processes and infected files look like. Antivirus
software vendors scramble to release a virus definition when a new virus comes
out. Computers are always vulnerable to new malware or virus attacks. This is
the reason you should always use Antivirus software that update itself and
definitions frequently.
Examples of anti-virus software:
1. Avast 2. Norton 3. Avira 4. McAfee 5. Kaspersky 6. AVG
7. ESET 8. Dr. Web 9. Panda 10. BitDefender 11. The Shield
12. CM Security
Other Threats to Computers
Electricity
Rodents
Dust