Do bug bounties. I remember when Facebook used to put, what I presume, were PK IDs from a user table in their URL query strings. Lower numbers being earlier us

Do bug bounties. I remember when Facebook used to put, what I presume, were PK IDs from a user table in their URL query strings. Lower numbers being earlier users. Anyway, I couldn't find Mark Z, but messaged one of the early staff. I then got a friend request off him. Pretty sure if I'd been a dev at the time, I could have convinced him to get me an interview.