Hello. I use the portable apps at work, so the documents i have into the drive are confidential.
I have seen that the backup aplication uses 7zip to compress the backup folder. 7zip has an option to encrypt the compressed file by a password. The bakcup application could be inproved by giving the option to encrypt the backup file.
I'm not sure they can easily be used for backup, but perhaps you could back up your files into a TrueCrypt or FreeOTFE vault using the integrated backup utility. Otherwise I would recommend that you either encrypt it manually or spend a bit of time reading the Toucan (or the 7-zip) documentation to make a batch file that does this automatically.
BTW, I think the built-in backup util. Is kinda like what Apple does with its software: put in as few options as possible to make the experience as seamless and not-annoying as possible.
Good luck with that!
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