Abstract: The present invention discloses a method and apparatus for automatically protecting computers against harmful programs. The method comprises: restricting an object program from accessing some resources in a computer system based on predetermined resource access rules; scanning computer resources accessed by the object program to determine whether the accessed computer resources are infected by the object program; and analyzing malicious behaviors based on behavior characteristics of the object program to determine whether the object program is a harmful program.

Abstract: A method and an apparatus for detecting malicious behavior of a computer program are disclosed. The method and apparatus analyze behavior characteristics of a malicious program using the concept of a monitored process set. The method comprises: monitoring an action executed by the computer program; searching for a process set associated with the monitored action within a library of monitored process sets, the process set including information of suspicious processes correlated with each other in creating relationships; and if the process set associated with the monitored action is found, judging whether the monitored action belongs to malicious behavior by correlation analysis based on information recorded in the process set found.