“If your (Signal) group has more than 50 people in it, it's not a private space for communication,” EFF’s @evacide told @wired. Keep truly sensitive information to the smallest possible groups, or to one-on-one communications. https://www.wired.com/story/how-to-organize-safely-in-the-age-of-surveillance/
@eff two people could credibly have a private conversation. Once a group reaches a critical size*, the likelihood that one of them is a fed spikes to 100%.
*Three.
