PC Tools Internet Security is an integrated security software package containing anti-spyware, anti-virus, anti-spam and firewall modules. The application is based on technologies such as Download Guard responsible for blocking new threats by comparing downloaded objects with information available on the network, Behavior Guard blocking new threats, Browser Defender protecting against attacks via websites, including phishing attempts. In addition, an advanced spam filter and firewall protect against emails aimed at stealing data and attempts by cybercriminals to enter the system.

Continuous real-time protection is provided by IntelliGuard technology. This function monitors the system to detect malicious activities such as spyware processes, cookies tracking user activity, suspicious ActiveX objects, browser hijackers, keystroke logging processes, Trojan horses and more. PC Tools Internet Security also includes Spyware Doctor, a software package that is appreciated by users all over the world.