Encrypt PDF software allows you to encrypt (using standard 40-bit or 128-bit supported by Acrobat Reader 5.0 and up) existing PDFs.

Smash! is a fast, powerful, user friendly encryption and decryption utility, complete with Government level file wiping, and Government approved cryptography. Smash! is the answer to keeping your files secure, safe, and out of unwanted hands!...

Regain control over your e-mail messages by stopping spam and email viruses before downloading them to your computer. Save time and Internet resources and also protect your computer from dangerous items that can harm it.