Safe area for storage of sensitive plain text files

I am planning on buying the complete Comodo suite. A Comodo user told me about the sand box feature. My understanding of the sand box is that it is a way of isolating applications and running them with limited privileges. Is there a way to use the sand box feature in Comodo to store sensitive plain text files as safe as possible away from broken in intruders who are using system calls?

I am not interested in encrypting the files as it has caused trouble in the past.

Hi omigod…, welcome to the forums.

You could do that, but you need to be aware that the storage inside the sandbox must be considered volatile (ie. you could loose it). A sandbox reset or crash would result in the loss of all data solely stored in the virtual environment.