I hear all this vague information about how USB ports are dangerous, because people can just stick in a stick with malware on it and Windows just happily runs it automatically, or something.
It's so difficult to find clear and correct information about anything.
Whatever truth there may be to this danger, it has certainly managed to spook me. To the point where I'm looking at "USB port blockers" which are extremely pricey and seriously consider ordering a bunch of those to physically block all my USB ports which aren't in use.
But then, if somebody has physical access to my computer, they can just pull out one of the occupied USBs and insert their "trojan stick" instead, no?
Why are USB ports dangerous? Why do operating systems (apparently) just run random executables whenever a stick is inserted?