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 623 you need to run LiveUpdate feature of Norton Internet Security product. Please note that LiveUpdate definition identifier of Security Update 623 is 20120528.001 and its description was last modified on May 28, 2012 2:29:59 PM PDT.

Security Update 623 adds coverage for the following vulnerabilities and threats:

• Web Attack: Mass Injection Website 2:
  It is an attack where an iframe which points to a malicious site is injected in large number of clean websites.
  
  
• System Infected: LilyJade Malware Activity:
  This signature detects LilyJade malware activity on the infected machine.
  
  

Security Update 623 provides updated coverage for the following vulnerabilities and threats:

• Web Attack: Blackhole Toolkit Website:
  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.
  
  
• Fake App Attack: Fake AV Redirect 21:
  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 JAR File Download 6:
  This signature detects attempts to download malicious JAR files.