Sometime before 2007:

Zuckerberg: Yeah so if you ever need info about anyone at Harvard
Zuckerberg: Just ask
Zuckerberg: I have over 4,000 emails, pictures, addresses, SNS
[Redacted Friend’s Name]: What? How’d you manage that one?
Zuckerberg: People just submitted it.
Zuckerberg: I don’t know why.
Zuckerberg: They “trust me”
Zuckerberg: Dumb fucks

Facebook was NEVER not evil, regardless of your rose-tinted glasses.