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 439 you need to run LiveUpdate feature of Norton Internet Security product. Please note that LiveUpdate definition identifier of Security Update 439 is 20110822.030 and its description was last modified on August 22, 2011 5:41:19 PM PDT.

Security Update 439 provides updated coverage for the following vulnerabilities and threats:

• Web Attack: Malicious Toolkit Request:
  This signature detect attempts to download exploits from a malicious 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: Exploit Kit Variant:
  This signature detect attempts to download exploits from a malicious toolkit which may compromise a computer through various vendor vulnerabilities.
  
  
• System Infected: Malicious Trojan Request:
  This signature detects attempts to post stolen information from victim's machine to the hacker controlled servers.
  
  
• Web Attack: Malicious Toolkit Download Activity 4:
  This signature detect attempts to download exploits from a malicious toolkit which may compromise a computer through various vendor vulnerabilities.
  
  
• Web Attack: Malicious File Download Request 7:
  This signature will detect attempt to download malicious files through HTTP requests.
  
  
• Web Attack: Blackhole Toolkit Website 7:
  This signature detects attempts to download exploits from Blackhole toolkit that may compromise a computer through various vendor vulnerabilities.
  
  
• Web Attack: Facebook LikeJacking Attack 4:
  This signature will detect malicious web pages which are used for facebook likejacking attacks.