When I was shopping for groceries today, I saw something strange. The buses have displays to show what Line they are, today all of the buses I saw had blank dis

When I was shopping for groceries today, I saw something strange. The buses have displays to show what Line they are, today all of the buses I saw had blank displays. On my way home, I could see the display on the bus driver's seat, which only displayed an otherwise blank Windows Embedded CE 6.0 start screen. Oh, and the thingy you put your ticket in get the stamp was out of order on all the buses. Made me wonder if that was due to some component involved was using log4j? I don't think it's very likely - why would the bus display or the ticket stamping machine be affected in a way that requires turning them off? But who knows, maybe somebody overreacted, or maybe these depend on some backoffice infrastructure that is temporarily offline due to log4j. It was weird, though. This is the first time I remember a security vulnerability made the national news (in Germany, if it matters). I don't think even Heartbleed got that much attention outside IT news outlets.