Reports say files connected to India’s Kudankulam nuclear power plant were found in data tied to a cyber intrusion. Early disclosures prompted questions after officials initially denied an attack before later acknowledging that malware had been detected on parts of the plant’s IT environment. Investigators suggested the compromised material dated back months earlier, implying the intrusion may have remained unnoticed for a long time. While the nuclear control systems were described as unaffected, the incident renewed pressure to harden critical-infrastructure cybersecurity.