What does Protect PDF not protect?
It does not exist as a functional tool. Use alternatives listed in the how-to section.
What this does not protect
- Password-protected PDF writing is not implemented. This tool does nothing.
- Even when implemented, PDF password protection is weak by design. RC4 and AES-128 encryption in PDFs are well-understood and quickly crackable.
- It cannot fix compromised devices, accounts, or unsafe sharing channels.