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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,〔Harris, Janet. ("Symantec Behaviour-based Security For Consumers" ), Security Watch, January 19, 2007, accessed July 10, 2009.〕 a developer of behavioral anti-malware and anti-phishing software solutions in the United States.〔(Symantec To Acquire WholeSecurity )〕
==How it works==
An algorithm is used to evaluate hundreds of attributes relating to software running on a computer. Various factors are considered before determining that a program is malicious, such as if the program adds a shortcut on the desktop or creates a ''Windows Add/Remove programs'' entry. Both of those factors would indicate the program is not malware.〔 The main use of SONAR is to enhance detection of zero day threats. Symantec claims SONAR can also prevent attackers from leveraging unpatched software vulnerabilities.〔McMillan, Robert. ("Symantec to use SONAR to find zero-day attacks" ), Computerworld, January 16, 2007, accessed July 10, 2009.〕
Ed Kim, director of product management at Symantec, expressed confidence in SONAR, "We've done extensive testing on emerging threats, and it catches early threats and variants of existing threats."〔Keizer, Gregg. ("Symantec Adds Zero-Day Defense To Consumer Security Line" ), InformationWeek, January 17, 2007, accessed July 10, 2009.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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