@sylv_a personally, I'd recommend #XMPP+#OMEMO (and #PGP/MIME - encrypted #eMail) for real #E2EE with #SelfCustody of Keys as well as actual #decentralization.

• All #SingleVendor and/or #SingleProvider solutions are inherently insecure, if not due to #TechStack (i.e. using a #CDN like #ClownFlare for app assets with no valid reason), #PII (demaning a #PhoneNumber which oftentimes cannot be obtained anonymously for no valod reason!) or lack of #DataProtection #Laws (i.e. #CloudAct is inherently incompatible with #GDPR & #BDSG), it's due to the inherent risks of #centralization.

Cuz I noone's gonna risk jailtime for (non-paying!) users - it at all…

• Not even @Mer__edith !

In fact I'd call U.S. MIL/INTEL as "criminally incompetent" if they didn't manage to plant multiple people inside @signalapp / #Signal or any other single-vendor / single-provider messenger.

• Cuz if Signal wasn't #NOBUS, they would've been shutdown/taken down/criminalized/hacked like #EncroChat and #SkyECC.

Personally, solutions like Signal & #Threema have a stench like #CryptoAG / #MINERVA / #Rubikon and #ANØM / #OperationIronside / #OperationTrøjanShield.

By contrast: #OpenStandards like XMPP+OMEMO & PGP/MIME are independently verifyable and not dependent on on a single individual/organization for maintenance/survival/implementation/development.

• Also not depending on #GAFAMs and/or #VCmoneyBurningParties is way more sustainable long-term...

Personally I'd still recommend @monocles / #monocles with #monoclesChat & #gajim...