Classes by Reify Joie
The "Free" Model by Oliver Widder.
OPSEC 101 — Online safety fundamentals for kinksters
OPSEC, or Operations Security, is the process of protecting individual pieces of data that could be grouped together to give the bigger picture (called aggregation).
In other words, preventing play partners, stalkers, friends, family, or coworkers from finding out about your vanilla and kink identities by piecing together bits of seemingly random or innocent information. For example, using the same photos for both kink and vanilla profiles or using your vanilla mobile number on your kink Signal, Snapchat, or Kik.
This is an interactive (smartphones, tablets, and laptops out) 101-level class that will teach the basics of protecting your privacy by keeping your kink and vanilla lives separate online.
Peter Steiner's cartoon, as published in The New Yorker.