@sigmasternchen Let's not even talk about the possibility that you don't even need to compromise the device per-se. Someone might just inadvertently post a screenshot of the group chat somewhere they shouldn't. Someone might have shown their phone with the chat open to someone else to whom they shouldn't show. As your group members grow, these "mishap"s will only become more and more likely, and I will argue that all of these options are far easier than either legal processes or trying to break E2EE itself. Personally I am only comfortable trusting E2EE up to around 20 participants. For anything beyond that I automatically assume that E2EE does not exist.