Security Updates give the most recent protection content for NIS product, 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 403 you need to run LiveUpdate feature of Norton Internet Security product. Please note that LiveUpdate definition identifier of Security Update 403 is 20110629.050 and its description was last modified on June 29, 2011 8:04:07 PM PDT.

Security Update 403 provides updated coverage for the following vulnerabilities and threats:

• Web Attack: Malicious Toolkit Website 11:
  This signature detects attempts to download exploits from a XPLload toolkit which may compromise a computer through various vendor vulnerabilities.
  
  
• Web Attack: Malicious Toolkit Website 10:
  This signature detect attempts to download exploits from a malicious toolkit which may compromise a computer through various vendor vulnerabilities.
  
  
• Web Attack: Malicious Toolkit Download Activity:
  This signature detects malicious activity on the host machine
  
  
• Web Attack: Exploit Kit Variant Activity 7:
  This signature detect attempts to download exploits from a malicious toolkit which may compromise a computer through various vendor vulnerabilities.