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 451 you need to run LiveUpdate feature of Norton Internet Security product. Please note that LiveUpdate definition identifier of Security Update 451 is 20110909.030 and its description was last modified on September 9, 2011 4:00:41 PM PDT.

Security Update 451 provides updated coverage for the following vulnerabilities and threats:

• Web Attack: Malicious Java Activity 6:
  This signature detects attempts to download malicious JAR files