Proetect PC from Virus and spyware

_{What is antivirus?}

Antivirus software are computer programs that attempt to identify, neutralize or eliminate malicious software. The term "antivirus" is used because the earliest examples were designed exclusively to combat computer viruses; however most modern antivirus software is now designed to combat a wide range of threats, including worms, phishing attacks, rootkits, trojan horses and other malware. Antivirus software typically uses two different approaches to accomplish this:

Examining (scanning) files to look for known viruses matching definitions in a virus dictionary, and

identifying suspicious behavior from any computer program which might indicate infection.

The second approach is called heuristic analysis. Such analysis may include data captures, port monitoring and other methods.

Most commercial antivirus software uses both of these approaches, with an emphasis on the virus dictionary approach.

Some of very good rated free Antivirus Application

AntiVir version 8.1.00.295 Classic

AntiVir version 8.1.00.331 Premium

BitDefender 2008 version 11.0.16

AVG version 8.0.100 Free

Avast! Home Edition

_{What is Adware?}

Adware or advertising-supported software is any software package which automatically plays, displays, or downloads advertisements to a computer after the software is installed on it or while the application is being used. Some types of adware are also spyware and can be classified as privacy-invasive software.

Some of very good rated free Adware detection Application

Ad-Aware

Spybot - Search & Destroy

Link: http://en.wikipedia.org/wiki/Adware

_{What is Spyware?}

Spyware is computer software that is installed surreptitiously on a personal computer to intercept or take partial control over the user's interaction with the computer, without the user's informed consent.

While the term spyware suggests software that secretly monitors the user's behavior, the functions of spyware extend well beyond simple monitoring. Spyware programs can collect various types of personal information, such as Internet surfing habit, sites that have been visited, but can also interfere with user control of the computer in other ways, such as installing additional software, redirecting Web browser activity, accessing websites blindly that will cause more harmful viruses, or diverting advertising revenue to a third party. Spyware can even change computer settings, resulting in slow connection speeds, different home pages, and loss of Internet or other programs. In an attempt to increase the understanding of spyware, a more formal classification of its included software types is captured under the term privacy-invasive software.

Link: http://en.wikipedia.org/wiki/Spyware

Some of very good rated free Spyware detection Application

Spybot - Search & Destroy

GIANT AntiSpyware

Windows Defender

Good Link….

AntiVirus http://en.wikipedia.org/wiki/Antivirus_software

List of antivirus software http://en.wikipedia.org/wiki/List_of_antivirus_software

List of computer viruses http://en.wikipedia.org/wiki/List_of_computer_viruses

List of trojan horses http://en.wikipedia.org/wiki/List_of_trojan_horses

Linux malware http://en.wikipedia.org/wiki/Linux_malware

Timeline of notable computer viruses and worms http://en.wikipedia.org/wiki/Timeline_of_notable_computer_viruses_and_worms