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 475 you need to run LiveUpdate feature of Norton Internet Security product. Please note that LiveUpdate definition identifier of Security Update 475 is 20111014.031 and its description was last modified on October 14, 2011 6:01:07 PM PDT.

Security Update 475 provides updated coverage for the following vulnerabilities and threats:

• Web Attack: Blackhole Toolkit Website 2:
  This signature detects attempts to download exploits from Blackhole toolkit that may compromise a computer through various vendor vulnerabilities.
  
  
• Web Attack: Acrobat PDF Suspicious File Download 8:
  This signature detects downloads of Adobe PDF files containing malicious content.
  
  
• Web Attack: Mass Iframe Injection Attack 3:
  It is an attack where an iframe which points to a malicious site is injected in large number of clean websites.