As new threats emerge, Symantec immediately builds new protection updates and makes them available for download on a subscription basis. If your subscription has expired, click here
Virus definitions for Norton AntiVirus for Macintosh versions 7-8 will no longer be updated after August 1, 2008. To continue receiving updated virus definitions, please upgrade to a newer version of Norton AntiVirus for Macintosh.
The virus definitions installer you should download depends on the Mac OS version and the version of Norton AntiVirus for Macintosh or Symantec AntiVirus for Macintosh you are running.