Why would one of the largest organizations known for its invasiveness and controversial clear-name policy have a .onion address?
Facebook is aware of attempts by many governments to restrict access to a tool that allows strangers across the web to talk and collaborate freely. While its .onion address doesn’t make it much easier to maintain an anonymous account, it does make Facebook more accessible in places where it’s censored.
Prior to the release of an official .onion domain, accessing Facebook through Tor would sometimes lead to error messages and inability to access the website. ProPublica explicitly referenced the existence of Facebook’s .onion site when they started their own onion service.
The site also makes it easier for Facebook to differentiate between accounts that have been caught up in a botnet and those that legitimately access Facebook through Tor. As of its 2014 release, the site was still in early stages, with much work remaining to polish the code for Tor access. It has been speculated that other companies will follow suit and release their own Tor-accessible sites.
LINK: https://www.facebookwkhpilnemxj7asaniu7vnjjbiltxjqhye3mhbshg7kx5tfyd.onion/
To access any onion link, you need to use the Tor browser