zero-knowledge encryption

Zero-knowledge encryption is a security model where service providers claim they cannot access user data because encryption keys are never sent to their servers. On WindowsForum.com, discussions examine real-world vulnerabilities in this model. A thread on malicious server attacks reveals that password managers like Bitwarden, LastPass, and Dashlane can have their zero-knowledge promises broken if the provider's backend is compromised, allowing vault exfiltration. Another thread compares Proton Mail and Outlook on Windows 11, highlighting Proton Mail's zero-knowledge architecture as a key privacy advantage for users prioritizing security over convenience. These conversations underscore that zero-knowledge encryption is not absolute and depends on implementation and threat models.