SONAR (Symantec)
SONAR is the abbreviation for Symantec Online Network for Advanced Response. Unlike virus signatures, SONAR examines the behavior of applications to decide whether they are malicious. SONAR is built upon technology Symantec acquired in its late 2005 purchase of WholeSecurity, a developer of behavioral anti-malware and anti-phishing software solutions in the United States.
Read more about SONAR (Symantec): How It Works, Background, SONAR 2, SONAR 3, SONAR 4, Known Issues