Should I suggest to my friends to stop using all messaging apps, except Signal?
Andrea Fortuna

I swear I did not know anything!

“WhatsApp has implemented a backdoor into the Signal protocol, giving itself the ability to force the generation of new encryption keys for offline users and to make the sender re-encrypt messages with new keys and send them again for any messages that have not been marked as delivered. The recipient is not made aware of this change in encryption.”