Encryption: Microsoft Teams vs ChatSecure
Microsoft Teams uses e2ee optional for 1:1 calls only. ChatSecure uses e2ee via omemo/otr over xmpp. The strength of encryption determines whether your messages can be intercepted and read by third parties, including the platform operator itself. For maximum protection, look for apps that encrypt everything by default without requiring manual activation. WeTalkin provides E2EE on all communications with zero-knowledge architecture.