This invention discloses a method of ensuring the system security in the Windows operating system. The method is: spring the system monitoring program when the Windows operating system is preparing to found tenor for the executable program put forward a request of executing the program; the system monitoring program obtains the check file corresponding to the mentioned executable program. If there is no check file or the file is vacancy, confirm the mentioned executable program is illegal and terminate initializtion work of founding tenor. Otherwise judge whether the executable program is legal. If it's illegal, terminate initializtion work of founding tenor, or else found tenor as the normal flow. |