Is end‑to‑end encryption enough for file sync services?

I've been using several cloud sync tools (Dropbox, OneDrive, Mega) and I'm concerned about data leakage. Is E2EE the only thing I should look for, or are there other security aspects we should consider?

Great question! While E2EE is crucial, you also need to verify:

• Zero‑knowledge architecture – the provider shouldn't be able to read your data.
• Two‑factor authentication for account access.
• Open‑source client code for transparency.
• Regular security audits and bug bounty programs.

Don't forget about metadata exposure. Even if file contents are encrypted, timestamps, filenames, and folder structure can leak info. Some services hash filenames before upload.