You can protect all your data using ConcealFiles.You can conceal or hide data related to finance, outlook emails, investments or basically anything you can think of with concealfiles. We support concealing or hiding data of all the types.
Frankly we don't care. You can use concealfiles for whatever reason to hide and protect your files under standard images. We don't encourage or discourage you since that's not our job. You can use ConcealFiles to protect anything.