PUA.ChangeDNS is a generic detection for many individual Security Risks that share the primary functionality of altering DNS settings without permission and for which specific definitions have not been created. A generic detection is used because it protects against many Security Risks that share similar characteristics.

Initial Daily Certified version of virus definitions for Norton security products was released on July 24, 2014 revision 035. 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.

PUA.ChangeDNS 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 PUA.ChangeDNS 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 PUA.ChangeDNS, 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.