There may be times when you want to transmit a piece of data that contains no personally identifiable information (PII), but is still sensitive to your business missions. You may feel uncomfortable sending this data out over an unsecured network like the Internet. In that case, you can use steganography tools. Steganography enables you to embed sensitive files within a cover file, usually an image. You set a password to retrieve the hidden file and share it ahead of time with the recipient. When the recipient receives the cover file, they are able to enter the password and extract the true sensitive file stored inside the cover. However, to any attacker looking in on the data transmission, they will only see the cover file.
OpenStego is an open-source steganography tool that can be downloaded here. It is very straightforward to configure and use for any purpose that you feel requires steganography.