2026 Kudankulam Nuclear Plant — World Leaks exposure via Reliance contractor breach; ~19K files (Jul)
Data compromised
~19,000 files in World Leaks Reliance cache purportedly relate to Kudankulam Units 3–4 support infrastructure: ventilation/cooling blueprints, control room layout, vendor proposals, supplier lists, NPCIL–Reliance joint inspection records with photos, insurance policies—Reuters reviewed but could not fully verify authenticity; not reactor core systems
Technical writeup
Critical-infrastructure document exposure — July 15, 2026. Reuters reported World Leaks published ~19,000 files from an 858,000-file Reliance Group cache that appear tied to India's largest nuclear plant, Kudankulam (Tamil Nadu), operated by NPCIL. Materials surfaced through a partial breach Reliance Infrastructure confirmed on a Yotta Data Services-hosted server; Reliance holds the 2018 contract for Units 3–4 support infrastructure. NPCIL was communicating with Reliance about the incident at reporting time but had not publicly confirmed document authenticity or scope. CERT-In is investigating. BreachHistory indexes the Reuters-cited ~19,000 Kudankulam-related file count as downstream contractor exposure.
Root cause
Downstream exposure of Kudankulam Nuclear Power Plant project files stolen from Reliance Infrastructure (NPCIL contractor) in World Leaks extortion dump—NPCIL had not issued standalone breach notice at catalog time