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 509 you need to run LiveUpdate feature of Norton Internet Security product. Please note that LiveUpdate definition identifier of Security Update 509 is 20111207.001 and its description was last modified on December 7, 2011 2:53:06 PM PST.

Security Update 509 adds coverage for the following vulnerabilities and threats:

• Web Attack: Facebook LikeJacking Attack 30:
  This signature will detect malicious web pages which are used for facebook likejacking attacks.
  
  
• Web Attack: Exploit kit Website 8:
  This signature detect attempts to download exploits from a malicious toolkit which may compromise a computer through various vendor vulnerabilities.
  
  
• Web Attack: Facebook LikeJacking Attack 31:
  This signature will detect malicious web pages which are used for facebook likejacking attacks.
  
  
• Web Attack: Facebook LikeJacking Attack 32:
  This signature will detect malicious web pages which are used for facebook likejacking attacks.
  
  

Security Update 509 provides updated coverage for the following vulnerabilities and threats:

• Web Attack: Malicious Injected Javascript 3:
  This signature detects attempts to exploit machine through malicious JavaScript.
  
  
• Web Attack: Malicious Executable Download:
  Scripts may be downloaded by a browser but be specified as an image, thus evading some types of monitoring software.
  
  
• Web Attack: Malicious Toolkit Website 9:
  This signature detect attempts to download exploits from a malicious toolkit which may compromise a computer through various vendor vulnerabilities.
  
  
• Fake App Attack: Fake AV Download Request 2:
  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 File Download Request 10:
  This signature detect attempts to download exploits from a malicious toolkit which may compromise a computer through various vendor vulnerabilities.