Huh? End-to-end just means it's not decrypted in transit by design. All the other usual technical things can still go wrong (trust model failures, exploitable p

Huh? End-to-end just means it's not decrypted in transit by design. All the other usual technical things can still go wrong (trust model failures, exploitable programming bugs, crypto protocol breaks, crypto algorithm breaks, ui trickery etc). Not to mention social engineering, phishing, backdoors and such.