File security, in plain terms
Deep dives on encryption, secure erasure, and keeping your files private — from the team behind FileX.
PBKDF2 vs Argon2 vs bcrypt — which key-derivation function and why
PBKDF2, Argon2, and bcrypt explained: what a key-derivation function does, how they differ on memory-hardness, and why FileX uses PBKDF2 in the browser.
How to password-protect a PDF for free (without uploading it)
Password-protect a PDF for free, in your browser — no upload, no account. FileX wraps it in strong AES-256-GCM, not a weak native PDF password.
Client-side vs. zero-knowledge cloud encryption — why local wins
"Zero-knowledge" cloud services still upload your files. Client-side tools never do. Here's the difference in threat models, and when each one actually protects you.
The hidden metadata your photos and PDFs leak about you
Every photo and PDF you share carries invisible metadata — GPS coordinates, device details, author names, timestamps. Here's what leaks, why it matters, and how to strip it.
Does deleting a file actually erase it? NIST 800-88, SSDs, and secure erase
Deleting a file usually just hides it — the bytes stay recoverable. Here's what really happens, what NIST SP 800-88 Clear/Purge/Destroy mean, and why SSDs change the game.
How AES-256-GCM keeps your files safe (and what PBKDF2 actually does)
A plain-English walkthrough of the encryption FileX uses — AES-256-GCM, PBKDF2 key derivation, salts, IVs, and the authentication tag that catches a wrong password.