Ext.privacyassistant.net can be removed with the proper approach. The site can be annoying and dangerous. Its related to the PopAds advertising network. The Ext.privacyassistant.net site is often classified as a browser hijacker. Affected browser includes Google Chrome, Mozilla Firefox, Internet Explorer, Opera, and other programs.
Article Link: http://bestsecuritysearch.com/privacyassistant-remove-chrome-ie-firefox/