Thousands of confidential files related to India’s largest nuclear power project have been posted on the dark web, raising fresh security concerns over the Kudankulam plant in Tamil Nadu, according to reports. The leak, attributed by the ransomware group “World Leaks,” reportedly includes blueprints, equipment designs, supplier lists and insurance documents tied to the project. Reuters reported the disclosure, saying Indian cyber authorities have opened an investigation.
World Leaks claims the material was obtained by hacking a server belonging to Reliance Group, a contractor on the Kudankulam expansion. Reuters said about 858,000 files were leaked in total, including some 19,000 described as the most “sensitive” files related to Kudankulam. Reliance told Reuters the data was “partially leaked” and said the information came from servers run by a third‑party data‑centre provider, identified in the report as Yotta. The company has notified the government, Reuters added.
The leaked documents reportedly span 2016 to 2025. They include alleged designs for ventilation and cooling systems for the under‑construction third and fourth units, a full floor layout for a “common control room,” supplier proposals and an approved supplier list. The files also reportedly contain minutes of a 2024 joint inspection between the Nuclear Power Corporation of India (NPCIL) and Reliance, photos of equipment, and insurance details. One document cited says Reliance would receive roughly $112 million if the third and fourth units were destroyed in a terrorist attack.
Nicholas Roth, senior director at the Nuclear Threat Initiative, told Reuters that such a leak could create “serious problems” for the physical security of a nuclear project. The reactors for the initiative were supplied by Russia’s state‑owned Rosatom, the report noted. Reliance won the design and construction contract for units three and four in 2018; the two units are scheduled to be operational by 2027 and are expected to add about 2,000 megawatts of capacity.
World Leaks, which has previously targeted corporate groups such as Nykaa and Tata, typically steals corporate data and posts it publicly if ransom demands are not met. Its website is accessible via specialized browsers on the dark web. Reuters reported that the ransomware group did not respond to questions about the Reliance files. NPCIL’s chairman, India’s CERT‑In cyber agency and the central government had not publicly commented at the time of the report.
The disclosure has prompted concern because of the potential implications for nuclear safety and security. Authorities’ investigation into the source and scope of the leak will be closely watched for any signs that sensitive operational details have become vulnerable to misuse.
Original Source: https://assam.nenow.in/data-leak-raises-safety-risks-at-indias-largest-nuclear-plant/
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Publish Date: 2026-07-16 19:59:00
