It was around for years, but I remember int he last year or two a vulnerability was found and it was shut down.
Free software, heavy encryption, could do a file, a file with a hidden partition inside.
Anyone remember someone the older ones? maybe list them off for something to jog my memory?
It's on the tip of my tongue
Thanks for the help
EDIT
And it's Truecrypt, the minute I hit post it came to me. Sigh.
Thanks for looking