BENGALURU: Amid reports of a major leak of project-related files linked to the Kudankulam Nuclear Power Plant in Tamil Nadu, the Anil Ambani-led Reliance Group confirmed a limited cybersecurity incident following an attempted ransomware attack on infrastructure operated by its third-party data centre service provider, Yotta Data Services.
Reliance Group, one of the contractors associated with the plant, claimed the incident was swiftly contained and did not affect its core systems or business operations.
The disclosure came after Kudankulam plant files were part of a large data dump on the dark web by ransomware group World Leaks.
According to a Reuters report, the leaked material includes engineering drawings, supplier information, inspection records and insurance-related documents spanning several years. Their authenticity, however, has not been independently verified.
Reliance Group said the matter has been reported to the Indian Computer Emergency Response Team (CERT-In), which is examining the incident. The Kudankulam facility is India’s largest nuclear power plant and forms a key part of the country’s long-term nuclear energy expansion plans. Reliance Infrastructure, a Reliance Group company, secured a contract in 2018 to develop infrastructure for Units 3 and 4 of the project, which are expected to become operational by 2027.
Experts cautioned that even if reactor systems are untouched, the exposure of infrastructure layouts, and supplier information could pose security risks.