If you are at the point where you are having to worry about government or corporate entities setting traps at the local library? You… kind of already lost.
What about just a blackmailer assuming anyone booting an OS from a public computer has something to hide? And then they have write access and there’s no defense, and it doesn’t have to be everywhere because people seeking privacy this way will have to be picking new locations each time. An attack like that wouldn’t have to be targeted at a particular person.
So I guess all that stuff they did to lock down the ability to see things on Xitter without an account was strictly for evil then