Reading over the FAQ they use Matrix to bridge the various messaging services to your one app which means the e2e encryption offered by those services ends at the beeper servers. If their servers were compromised they would be able to see the messages before matrix can forward them to beeper.
I would say no, but not because of their malice.
Reading over the FAQ they use Matrix to bridge the various messaging services to your one app which means the e2e encryption offered by those services ends at the beeper servers. If their servers were compromised they would be able to see the messages before matrix can forward them to beeper.