A-PDF Password Security Service is a windows service program which is running in the background. The service monitors multiple folders you specified. As PDF files copied or created in the folders, their password sercurity will be changed according your setting.

Why A-PDF Password Security Service
Multiple Hot Directories
The service can monitor multiple folders at the same time with different security setting.

Encrypt PDF Files

Protect your PDF documents from unauthorized access with standard password security:

* 40-bit RC4 encryption, which is supported by Adobe Acrobat 3.0 or above.
* 128-bit RC4 encryption, which is supported by Adobe Acrobat Reader 5.0 or above.

Decrypt PDF Files
You can also remove the standard password security from protected PDF files. Supports 40/128 bit RC4 and 128 AES encryption.

Note: you may get a password prompt to open the file. If you have no idea what password is, the program can not find passwords automatically for you, you may find a PDF password cracker tool here.
Change Restrictions of PDF Files
With A-PDF Password Security, you can set a PDF file to require a password to open, and/or restrict access. For example, to allow or not allow printing, copying content, changing the file, etc.