Statement and more informations from the German CCC alias Chaos Computer Club, a civil rights organization of software tweakers and computer experts:
https://www.ccc.de/en/updates/2024/das-ist-vollig-entgleist
By the way: The train manufacturer company is suing the people who exposed this, and CCC is collecting donations for their legal support - details on the page linked above.
They should sue the faucet manufacturers who replaced the cheap rubber washer with a “cartridge”. That shit affects way more people. The capitalism plan of reselling, rather than repairing, is a major reason why we are in the mistrustful state we are in. Go ethical hackers!