Kaspersky Anti-Hacker is a filter operating between personal computers and the Internet that checks all incoming and outgoing data streams and permits only safe data and actions. In this way, the system, on one hand protects against hacker attacks from external networks and from the other regulates access to the Internet applications, thus preventing the unauthorized outflow of information even if the system becomes infected with the most advanced backdoor Trojan programs. Kaspersky Anti-Hacker gives users the ability to define filtration rules for each Internet application, specific IP addresses, etc. Users can choose from among five preset levels of protection, as well as to increase the number of rules according to individual security requirements. The program also has a 'self-learning' feature that allows users to interactively create a set of rules best corresponding with installed software. Important product feature - low-level data interceptor (on the network protocol level) allows information filtration before processing by other applications and so provides 100% protection from the latest forms of hacker attack, including Ping Of Death attacks, Land-attacks, TCP and UDP port scanning and DoS attacks. SmartStealth, a unique integrated technology provides full control over computer ports. Thanks to this protection, systems become fully invisible to the outside. Therefore hackers simply cannot detect anything to attack, rendering all attempts to gain access doomed to failure. Kaspersky Anti-Hacker has an easy to understand graphical user interface that fits all user categories, from beginners to professionals. It produces detailed reports regarding the filtration of incoming and outgoing data streams. All critical events are recorded in a special report and immediately sent to the user.