I Built a Security Suite That Locks Files at the NTFS Level (Not Just Hides Them)

Description and use

ATLOCK v4 protects files by setting real NTFS ACL restrictions instead of merely hiding them. It stores data in an encrypted vault and reacts to intrusion attempts by capturing photos and videos.

Problem

Typical file lockers only hide files; anyone can unhide them, so data is not truly protected.

Outcome

ATLOCK v4 provides genuine file protection by enforcing NTFS ACL restrictions, secure credential storage, and intrusion detection without relying on hidden flags or plaintext passwords.

Workflow

• Install ATLOCK v4 from the GitHub release or website
• Use File Guard to select files/folders to lock; the tool updates NTFS ACLs to deny access
• Set a master password; the vault encrypts credentials with Fernet (AES-128-CBC + HMAC) and PBKDF2-HMAC-SHA256 (200,000 iterations)
• Optionally enable System Lockdown to lock the entire OS with a countdown
• Configure Intruder Ops to capture photos or videos on failed password attempts

Evidence

File Guard — Locks files using Windows' own NTFS access control lists. No password stored in a text file to steal. No "hidden" flag to toggle off. The filesystem says no.

Source

Password Vault — Fernet (AES-128-CBC + HMAC) encrypted storage for emails, UPI IDs, PINs, whatever you don't want floating around in plaintext.

Source