Is this behavior expected? I would imagine it would be a privacy violation in a multi-user system. I thought they had some sort of encryption for hiding the sites that I visit.
BTW, FF does not do this on private mode. But still it is concerning, that any program can know about the sites I visit just by looking at ~/.mozilla/profile/storage/default.
If you are concerned about a program you installed spying on you, then why do you use that program? If it can access a personal directory in Mozilla, what does it stop from accessing all the other files on your system?