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 450 you need to run LiveUpdate feature of Norton Internet Security product. Please note that LiveUpdate definition identifier of Security Update 450 is 20110908.030 and its description was last modified on September 8, 2011 5:17:13 PM PDT.

Security Update 450 provides updated coverage for the following vulnerabilities and threats:

• Web Attack: Malicious Java Activity 7:
  This signature detects attempts to download malicious JAR files
  
  
• Web Attack: Malicious Java File Download 4:
  This signature detects attempts to download malicious JAR files
  
  
• Web Attack: Malicious SWF File Download:
  This signature detects an attempt to exploit a vulnerability in Adobe Flash Player which may result in remote code execution.
  
  
• Attack: Apple PICT file PnSize CVE-2011-0257:
  This Signature detects buffer-overflow exploitation in Apple QuickTime.