Safe n Sec 2.5 + Antivirus is new generation of home PCs protection systems against various types of IT security threats such as viruses, worms, Trojans, spyware modules with an on-demand antivirus scanner. The program detects and blocks the malicious activity on the operation system level. Intercepting system calls and analyzing system applications activity Safe n Sec makes a decision about the malicious actions of application and blocks the attack in an initial stage. Safe n Sec 2.5 + Antivirus provides the inner PC environment security as well as secure Internet navigation. The program occupies minimum HDD (20 Mb) and uses no more than 2% processor resources as it doesn’t depend on signature updates. Being compatible and successfully supplementing other IT security software Safe n Sec provides constant and reliable PC protection.