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 520 you need to run LiveUpdate feature of Norton Internet Security product. Please note that LiveUpdate definition identifier of Security Update 520 is 20111223.001 and its description was last modified on December 23, 2011 1:30:05 PM PST.

Security Update 520 adds coverage for the following vulnerabilities and threats:

• Fake App Attack: FakeAV Redirect 11:
  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 Facebook Download 2:
  This signature will detect malicious web pages which are used for facebook likejacking attacks.
  
  
• System Infected: Trojan Smoaler Activity:
  This signature detects trojan Smoaler activity on the infected machine.
  
  
• Fake App Attack: Misleading Application File Download 10:
  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.
  
  
• Fake App Attack: Misleading Application File Download 11:
  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 520 provides updated coverage for the following vulnerabilities and threats:

• Web Attack: Blackhole Exploit Kit Website 8:
  This signature detects attempts to download exploits from Blackhole toolkit that 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.
  
  
• Web Attack: Facebook LikeJacking Attack 11:
  This signature will detect malicious web pages which are used for facebook likejacking attacks.
  
  
• Web Attack: Facebook LikeJacking 13:
  This signature will detect malicious web pages which are used for facebook likejacking attacks.
  
  
• Web Attack: Blackhole Exploit Kit Website 11:
  This signature detects attempts to download exploits from Blackhole toolkit that may compromise a computer through various vendor vulnerabilities.
  
  
• Web Attack: Malicious Facebook Download:
  This signature will detect malicious web pages which are used for facebook likejacking attacks.