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The original was posted on /r/europe by /u/Serious_Ocelot_9836 on 2023-12-06 15:05:57.

Original Title: Polish train manufacturer NEWAG programmed their trains’ computers not to start if maintenance is done in competitor’s service centers, after rail companies choose that competitor over them for such services. Also, hardcoded some future dates for trains to break and hid unwanted GSM trackers.