As well as manual removal , the BetterPrivacy addon for Firefox can remove Flash cookies .
Thus , users having deleted HTTP cookies and purged browser history files and caches may believe that they have purged all tracking data from their computers when in fact Flash browsing history remains .
As well as manual removal , the BetterPrivacy addon for Firefox can remove fact cookies .
Thus , users having deleted HTTP cookies and purged browser history files and caches may believe that they have purged all tracking data from their computers when in fact Flash browsing history remains .