The concept of “adware” includes programs that run ads (often in the form of pop-up windows) or redirect search requests to advertising sites.
Adware is often built into freeware or shareware programs, and installed on your computer at the same time with the main application without knowledge or consent. Sometimes adware can secretly download and install on your computer Trojan horse.
Obsolete, not updated on time versions of web browsers may be vulnerable to hacker tools, download adware to your computer. There is also a “program-browser hijackers” that can change the settings of a browser redirect incorrectly typed or incomplete URL-address-specific Web sites or to change the set to the home page. They can also redirect searches to pay (often pornographic) websites. (more…)