India metro smart cards vulnerable to ‘free top-up’ bug

India’s mass rapid transit systems — or metro, as it’s known locally — rely on commuter smart cards that are vulnerable to exploitation and allow anyone to effectively travel for free. Security researcher Nikhil Kumar Singh discovered a bug impacting Delhi Metro’s smart card system. The researcher told TechCrunch that the bug exploits the top-up […] India metro smart cards vulnerable to ‘free top-up’ bug by Jagmeet Singh originally published on TechCrunch...