http://ssd.iykpqm7jiradoeezzkhj7c4b33g4hbgfwelht2evxxeicbpjy44c7ead.onion/zh-hans/module/communiquer-avec-autrui
There are many other chat services that may claim to use end-to-end encryption, but if they are not open-source or do not use established encryption protocols, like the Signal protocol , and are not popular enough that security researchers pay attention, they may come with some risk of use. Some tools shift the security off a third-party company and onto you, like PGP and OTR , but they aren’t used commonly anymore, and tend to take technical expertise to operate securely.