In my experience, Bitdefender (I used the free version) had worked perfectly until their recent update. The recent update brought many false positives which were not resolved by their tech support's recommendation to uninstall and reinstall Bitdefender free. While Bitdefender does allow false positives urls to be bypassed, submitted for review, or whitelisted, this is not helpful as an ongoing strategy. Specific examples of false positives are when moving to particular screens while logged in to my secure investment website, while going to my own church's website, and when trying to go to the Toledo Zoo website (all https). Regretfully, I permanently uninstalled Bitdefender a few days ago, and have reverted to my lifetime (grandfathered) Malwarebytes Premium (3.0) in combination with Webroot secure. I have had no false positives since uninstalling Bitdefender. Bitdefender incidentally acknowledged my ticket but did not provide timely additional support; nor did they answer on their Facebook page or privately the extent to which other users have experienced this problem. Since this problem did not hit until 10-14 days ago, I do hope that you will retest Bitdefender, so that you can reach your own conclusions. Incidentally, I have had no problems on the Android version of Bitdefender--the problem (in my experience) is exclusively on the home version.