Went to 1password shortly after the first (maybe) debacle and have been extremely pleased since. I know it's a similar risk with a hosted database but the convenience is hard to beat
If you're looking for a pure kiosk experience check out porteus kiosk, it's a very stripped down distro that lets you choose Firefox or chrome and by default uses private browsing.
I'm sure if you need a whole desktop experience that's also possible but i don't know how
This thread right here, full of people discovering people different from them put things on the Internet and some of them are weird or gross