Everest Ransomware Group Allegedly Claims Breach of McDonald's India Systems

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Everest Ransomware Group Breaches McDonald's India, Exfiltrates Customer Data The Everest ransomware group has claimed responsibility for a cyberattack on McDonald's India, reportedly exfiltrating 861 GB of sensitive customer data. The group announced the breach on their dark web leak site on January 20, 2026, threatening to release the stolen information if the company does not respond promptly. 42 sources 43