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 556 you need to run LiveUpdate feature of Norton Internet Security product. Please note that LiveUpdate definition identifier of Security Update 556 is 20120224.002 and its description was last modified on February 24, 2012 1:37:27 PM PST.

Security Update 556 adds coverage for the following vulnerabilities and threats:

• Fake App Attack: Fake AV Redirect 6:
  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 556 provides updated coverage for the following vulnerabilities and threats:

• Web Attack: Malicious PDF File Download:
  This signature will detect attempts to download malicious PDF files which can perform various harmful activities on user's systems.
  
  
• 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.
  
  
• Web Attack: Malicious Exploit Kit Website 6:
  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 Redirect 31:
  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 Javascript Website 8:
  This signature detects attempts to exploit machine through malicious JavaScript.