in the minute immediately following the clip in the tweet in this article, she jokes (while on stage with Erika Kirk) that JD Vance was the assassin
cypherpunks
But you can turn off sealed sender messages from anyone, so they’d have to already be a trusted contact
The setting to mitigate this attack (so that only people who know your username can do it, instead of anybody who knows your number) is called Who Can Find Me By Number. According to the docs, setting it to nobody requires also setting Who Can See My Number to nobody. Those two settings are both entirely unrelated to Signal's "sealed sender" thing, which incidentally is itself cryptography theater, btw.
You can literally turn off read receipts in signal
But you can't turn off delivery receipts, which is what this attack uses.
those best practices don't mitigate the attack in this paper
The linked clip omits the awkwardness that follows; you can see more of it here.
And while you're on the Erika Kirk channel, see also her freudian grift slip
You think the Trump admin tells Larry Ellison what to do?



which instances?