New York Subways were also hit by Chinese hackers using a zero-day vulnerability. This is where nobody knew a door was even there until after it was opened. This was actually a better story than we usually hear. Only 3 of 18 systems were hit. No impact to customers or employee information, and the attack was stopped before damage occurred.

New York’s subway system was targeted by hackers with links to the Chinese government in April, according to an MTA document

Found at thehill.com