Security Updates give the most recent protection content for Norton Internet Security, which protect networked critical systems and remote and mobile users from unwanted network intrusions and hackers, as well as from viruses, Trojans, and worms.

To download and install the Security Update 494 you need to run LiveUpdate feature of Norton Internet Security product. Please note that LiveUpdate definition identifier of Security Update 494 is 20111115.030 and its description was last modified on November 15, 2011 3:35:34 PM PST.

Security Update 494 provides updated coverage for the following vulnerabilities and threats:

• HTTP BlackIce DownloadImage ActiveX BO:
  This signature detects attempt to exploit a buffer overflow vulnerability by passing long arguments into a method of Black Ice 'BiDib.dll ActiveX Control which may result in remote code execution.
  
  
• HTTP IE Attribute Handler Code Exec:
  This signature detects a remote code execution vulnerability in the Microsoft Internet Explorer.
  
  
• Fake App Attack: Fake AV Redirect 21:
  A Web based attack relating to misleading applications has been blocked. No further action is required, but you may wish to update your virus definitions and run a full system scan as a precautionary measure.
  
  
• Web Attack: Malicious Exploit Kit Website 4:
  This signature detect attempts to download exploits from a malicious toolkit which may compromise a computer through various vendor vulnerabilities.
  
  
• Malicious Site: Gamevance!gen1:
  This signature detects downloads related to GameVance which may display advertisements.
  
  
• Web Attack: Adobe CVE-2011-2140:
  This signature detects a buffer overflow vulnerability in Adobe Flash Player.
  
  
• Web Attack: Malicious Javascript Website 2:
  This signature detects attempts to exploit machine through malicious JavaScript.
  
  
• Fake App Attack: Fake AV Redirect 28:
  A Web based attack relating to misleading applications has been blocked. No further action is required, but you may wish to update your virus definitions and run a full system scan as a precautionary measure.
  
  

Security Update 494 removes coverage for the following vulnerabilities and threats:

• Web Attack: Malicious Toolkit File Download:
  This signature detects attempt to download exploits from a malicious toolkit which may compromise a computer through various vendor vulnerabilities.
  
  
• Fake App Attack: Fake AV Website 8:
  A Web based attack relating to misleading applications has been blocked. No further action is required, but you may wish to update your virus definitions and run a full system scan as a precautionary measure.