Top Antivirus For PC

                                                                             

Most of the computer viruses written in the early and mid-1980s were limited to self-reproduction and had no specific damage routine built into the code. That changed when more and more programmers became acquainted with computer virus programming and created viruses that manipulated or even destroyed data on infected computers.

In 1983, the term "computer virus" was coined by Fred Cohen in one of the first ever published academic papers on computer viruses. Cohen used the term "computer virus" to describe a program that: "affect other computer programs by modifying them in such a way as to include a copy of itself." ( note that a more recent, and precise, definition of computer virus has been given by the Hungarian security researcher Peter Szor: "a code that recursively replicates a possibly evolved copy of itself.”

The Creeper virus was followed by several other viruses. The first known that appeared "in the wild" was "Elk Cloner", in 1981, which infected Apple II computers.

Antivirus software was originally developed to detect and remove computer viruses, hence the name.

In particular, modern antivirus software can protect from: malicious Browser Helper Objects (BHOs), browser hijackers, ransom ware, key loggers, backdoors, root kits, trojan horses, worms, malicious LSPs, dialers, fraud tools, adware and spyware. Some products also include protection from other computer threats, such as infected and malicious URLs, spam, scam and phishing attacks, online identity (privacy), online banking attacks, social engineering techniques, Advanced Persistent Threat and bonnet Dodos attacks.

Virus removal tools are available to help remove stubborn infections or certain types of infection. Examples include Trend Micro's Root kit Buster, and hunter for the detection of root kits, Avira's antivirus Removal Tool, PC Tools Threat Removal Tool, and AVG's Antivirus Free 2011.

Antivirus software can attempt to scan for root kits. A root kit is a type of malware designed to gain administrative-level control over a computer system without being detected. Root kits can change how the operating system functions and in some cases can tamper with the anti-virus program and render it ineffective. Root kits are also difficult to remove, in some cases requiring a complete re-installation of the operating system.

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