If you have Windows and need top-notch encryption for your files, then you need Drop Secure Professional for Windows. With this program, you can be sure your data is protected.
The program starts by dividing each file into 256-byte chunks, encrypting each chunk with a separate password. This password is used only once for that set of data, before it is discarded.
Then, these chunks of data are placed into an archive. If a hacker or malicious user wanted to break into your files, they would first have to guess the encryption algorithm, then break the encryption using a brute force attack.
Even then, this person would have only 1/4000 of your data, and would be have no luck in trying to gain access to the other 3,999 parts. Drop Secure Professional for Windows is essential if you have any information that needs to be secure.