It is a "network of networks" that consists of millions of smaller domestic, academic, business, and government networks, which together carry various information and services, such as electronic mail, online chat, file transfer, and the interlinked Web pages and other documents of the World Wide Web.
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 permission.
Trojan horse is a program that installs malicious software while under the appearance of doing something else. Examples include various implementations of weather alerting programs, computer clock setting software, and peer-to-peer file sharing utilities
Spamming is the abuse of electronic messaging systems to indiscriminately send unwelcome bulk messages. The most widely recognized form of spam is e-mail spam. This term is applied to similar abuses in other media.
Antivirus software is a computer program that detects, prevents, and takes action to disarm or remove malicious software programs, such as viruses and worms. You can help protect your computer against viruses by using antivirus software
The first publicly known neutralization of a wild PC virus was performed by European Bernt Fix (also Bernd) in early 1987. Fix neutralized an infection of the Vienna virus. First edition of Polish antivirus software mks_vir started in 1987.. Fall 1988 also saw antivirus software Dr. Solomon's Anti-Virus Toolkit released by Briton Alan Solomon. By December 1990 the market had matured to the point of nineteen separate antivirus products being on sale including Norton AntiVirus and ViruScan from McAfee
Today's Antivirus have antispyware technology helps protect your computer from spyware programs that secretly monitor your activities or pop-ups that negatively impact your computer's security and performance.