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 Uses AES in IGE method (see this, if you question how one can securely use IGE) that is definitely secure against non-adaptive CPAs. IGE is known being not protected versus blockwise-adaptive CPA, but MTProto fixes this in the following way: In principle whatsapp is protected since the past https://www.mtpoto.com/