Kudankulam nuclear plant data breach triggers ‘absolute commotion’ among project’s top brass: sources
A ransomware group has accessed sensitive engineering and operational files from a contractor's server linked to the Kudankulam Nuclear Power Project. The breach has caused significant alarm among project officials, who are currently investigating the extent of the security threat to the nuclear facility's infrastructure.
Why it matters
Data breaches involving critical infrastructure like nuclear power plants pose severe national security risks by potentially exposing vulnerabilities in support systems.
Highly sensitive files of Kudankulam Nuclear Power Project (KKNPP) reportedly accessed by a ransomware group from a contractor’s server has triggered “absolute commotion”, sources in the KKNP said on Wednesday (July 15, 2026).
After commissioning two 1,000 Mwe VVER reactors, the KKNPP is constructing four more similar units with Russian technical know-how at Kudankulam, which is all set to house India’s biggest nuclear park with reactors generating 6,000 MW nuclear power.
According to a Reuters report, over 19,000 highly sensitive files dating between 2016 and mid-2025 and linked to KKNPP’s engineering blueprints on control, cooling and ventilation systems, list of vendors and suppliers supplying equipments, operational files on meeting records, reviews of joint inspection by the Indian and Russian engineers, insurance policies etc. had been accessed by well-known ransomware group, World Leaks.
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