Starting a Highly secure privacy oriented Professional social Network

Hi Everyone, I’d like to make a highly secure privacy oriented professional network where communication is end to end encrypted with minimum 4 k encryption such that it is impossible for anyone, general public, me or rogue employees of the network to read messages or wall and messages of a user if they are not friends or connected to that person on the platform, where its impossible to see with whom someone is connected, with whom someone on that network is communicating, by default and can opt out , yet the site’s  AI and only the AI can read a message in whatever language and flag it for crime and Terrorism and refuse to post that message so that the security of the network i never abused for crime.

Is this possible