ShieldFive is a zero-knowledge, AI-free file manager built for people who can't afford to be compromised. Your files are encrypted on your device before upload-so no one but you can read them. No scanning. No training. No backdoors. Just pure control.

Creating an account is quick and free. Click "Sign Up" in the top navigation, enter your email address and a strong master password, then verify your email. Once you have confirmed, you can log in and begin uploading files. Your master password unlocks your vault; each file has its own passphrase today (hybrid vault mode is on the roadmap).

After logging in, click "Upload" and select the files you want to store. You'll be prompted to enter a password for each file. The encryption happens locally in your browser-ShieldFive never sees your plaintext. Once encrypted, the files are sent to our servers for storage. You can monitor progress and later download or share each file using its unique passphrase.

To share, select the encrypted file in your ShieldFive dashboard and click "Share." You will generate a shareable link and set a separate link password (if desired), an expiration date, or download limit. Anyone with the URL and the link password can decrypt and download the file-no account needed. This means you can share sensitive documents without revealing your email or giving full account access.

Because we never hold your file-level keys, if you lose a password for a specific file, ShieldFive cannot decrypt it. You should back up each file's passphrase in a secure password manager or hardware vault. Only the lost file is affected-every other file in your account remains encrypted and accessible with its own passphrase or vault key.

Yes. You can begin on the Free plan with no credit card, then upgrade anytime without creating a new account. Your encrypted files stay in the same workspace and your existing links continue to work based on your plan's limits.