FYI - In the Prairieland case, iOS notifications revealed the contents of some Signal messages. This only applied to incoming messages, not outgoing ones.

Yet another reason to disable notification previews in Signal messages.

Signal security guide: https://activistchecklist.org/signal

March 10: Federal Trial Day 12 - Support the Prairieland Defendants

Both sides rested and closed their cases after a day dominated by the prosecution's effort to connect the defendants to Antifa ideology through social media, phone extractions, and chat messages. Judge Pittman questioned the relevance of the Antifa evidence.

Support the Prairieland Defendants
The other reason to disable message previews: if the cops confiscate your phone, they can just see notifications as they come in right on the home screen. That doesn't even require a forensic search of the device.

@activistchecklist

i keep notifications fully disabled on my lock screen for this reason