The best part was someone asked if Facebook tracks you even if you've logged out of their website. Holy shit, moment of truth for Zuck, I thought. Nope, he deflected by saying he'll get his team to get back to the senator, and then he spewed jargon ("I know websites use cookies [bla bla] for security"). Oh, he knew the answer, but he couldn't say it in front of all the cameras watching. And of-effing-course he knows what cookies are.
And also he emphasized too much how people are in control of what data they share. The better question is, what data does Facebook save that the users can't see: all the analytics, all the location tracking, all the websites they visit. I didn't volunteer that data to you, Zuck, and I can't even control whether you have that data or not! (Well ok, on desktop I have Ghostery that blocks many many tracking pixels...).
If under Firefox I also recommend "Decentraleyes" as well. This one loads CDN resources locally instead, so google's overused jQuery CDN is not hit, but a local copy of jQuery is loaded instead. There's another one called "Don't touch my tabs! (rel=noopener)" which I also recommend. As well as using Firefox Containers and some of their plugins, including the one that isolates Facebook for you.
I actually see the cookies remark as a mis-step -- the politically correct answer was "my team will get back to you" but the engineer in him couldn't resist trying to "correct" the senator who was trying to portray Zuck as technically ignorant.
IIRC, Ghostery is a company that used to work with advertisers in the past (when it was owned by a company called Evidon). It also collects data from its users.
uBlock Origin is a low footprint (compared to other ad/tracker blockers) extension primarily maintained by one person who refuses to even take donations for it. Scroll down to the "About" section on the GitHub page [1] and see this Wiki page on donations [2], which at this point in time states:
> Why don't you accept donations?
> I don't want the administrative workload coming with donations. I don't want the project to become in need of funding in any way: no dedicated home page + no forum = no cost = no need for funding. I want to be free to move onto something else if ever I get tired working on these projects (no donations = no expectations).
> Have a thought for the maintainers of the various lists. These lists are everything. This can't be emphasized enough.
Also see uBlock Origin's manifesto. [3]
For me, using uBlock Origin along with Privacy Badger [4] from EFF is a good combination.
And also he emphasized too much how people are in control of what data they share. The better question is, what data does Facebook save that the users can't see: all the analytics, all the location tracking, all the websites they visit. I didn't volunteer that data to you, Zuck, and I can't even control whether you have that data or not! (Well ok, on desktop I have Ghostery that blocks many many tracking pixels...).