这里主要探讨的是跑路的可能性，而不是隐私保护，这三家的隐私保护从技术上都没什么大问题。 MTProto Makes use of AES in IGE mode (see this, in the event you question how one can securely use IGE) which is protected towards non-adaptive CPAs. IGE is understood being not secure towards blockwise-adaptive CPA, but MTProto fixes this in the following method: Why WhatsApp? It's closed resource https://www.mtpoto.com/