On this show we discuss the big players in secure messengers. Not to spoil the fun, but we both highly recommend Signal.
Threat Model discussionWhat is our “definition of secure messenger”WhatsAppGroup and individual messages are encryptedUses the Signal ProtocolCan see metadataMeta harvests the data as much as possibleFacebook MessengerOnly in secret modeSecret mode is one device onlyDeveloped the same way as WhatsAppThreemaAudited, recently had an issuePaidUses usernames, not phone numbersiMessageReally good if you have Advanced data protection and/or icloud disablediCloud data security overviewAdvanced Data Protection for iCloudRCSGoogle is the majority partnerSMS fallback modeHow it worksSignalTelegram is BADemail the show: hosts (at) shortexplanations (dot) com