Packed.Generic.404 is a heuristic detection for files that may have been obfuscated or encrypted in order to conceal them from antivirus software. This heuristic detection is used to detect threats associated with multiple threat families.

Initial Daily Certified version of virus definitions for Norton security products was released on April 2, 2013 revision 003. It should be noted that users with the older versions of Norton Internet Security are limited to Daily LiveUpdate definitions. For more information, go to the page where the are described virus definitions available for Norton products.

Packed.Generic.404 Threat Assessment

Component	Severity
Wild Level	Low
Number of Infections	0 - 49
Number of Sites	0 - 2
Geographical Distribution	Low
Threat Containment	Easy
Removal	Easy
Damage Level	Low
Distribution Level	Low

According to the Symantec Threat Severity Assessment, overall risk of Packed.Generic.404 is now categorized as «Very Low» — poses little threat to users; rarely even makes headlines; no reports in the wild. Read more about Threat Severity Assessment.

More information about Packed.Generic.404, you can find on the official site of Symantec Corporation, where in addition to useful information you can find technical details and removal instructions: www.symantec.com

It is also recommended to read the article Network security threats, where you can find a brief description and explanation of the most dangerous security threats plus a few simple tips on how to protect your personal computer from them.