P3

P3 can secretly get into the computer from several malicious web sites or come along with free ad-supported software. Its main task is to serve commercial advertisements to user desktop or within related application. P3 modifies essential computer and, sometimes, browser settings without asking for user permission, so the adware could start automatically on every Windows startup and work hidden in background. P3 doesn't compromise computer security, but obstructs usual web surfing and may violate user privacy by tracking his Internet activity.