The one I found interesting is that FB had an option to do reverse phone number lookups. Outside individuals, or whoever, could hit FB sequentially with numbers to gain information on people and create their own database.
FB said they rejected bots after a few hit from the same IP address but how hard is it for bots to create a spoof IP address to hit FB over and over to create a list of people by cell phone number and connect the dots from any other public information on their FB page, relatives, likes, friends, locations, follows….
FB finally closed that option a week ago, before heading to congress.
I rarely use FB, don’t have a phone number connected to the account, and neither does my wife, but this has taught me to review the permissions granted to my phone apps. A lot of app permissions were shut down yesterday. Likewise, I don’t use the FB app, and turned off almost all of its permissions.
This morning I checked out what Google has on me and was happy to see that they had very little, other than youtube searches for fishing shows and South Park clips. They had zero location tracking on me, or at least tracking that I could see.
I’ll look into what FB has on me later, and review google search history when I’m not at work.