Meta terminology
PAC
Protect and Care
Meta's user-safety and abuse-prevention organisation, existing separately at each app - an internal quarterly review contrasts "Instagram PAC" with "FB PAC" and describes "the PAC team" as having its own engineers, 22 of them at Instagram in October 2017. No Meta document in this archive expands the acronym; "Protect and Care" is how the plaintiffs' filing in MDL 3047 spells it out.
Sources
Internal documentInstagram Quarterly Review (October 9, 2017)
Internal documentUnsealed internal messages ("Re: Instagram HPM" 04/04/17)
Internal documentTime Spent: The Research Journey
Internal documentYouth Empathy Framing
Internal documentH2 2017 Instagram Strategy
Internal documentUnsealed internal messages ("RE: H1'16 Company Goals: Feedback required")
Internal document"Addiction" to Facebook: A Literature Review
Internal documentUnsealed internal messages ("Integrity HC @ IG")