<ul data-eligibleForWebStory="true"><li>Tata Consultancy Services (TCS) claims none of its systems or users were compromised in the cyberattack on Marks and Spencer (M&S).</li><li>M&S suffered a major cyberattack in 2025, allegedly linked to compromised workers at TCS.</li><li>TCS, a third-party supplier for M&S for over a decade, secured a $1 billion contract in 2023 to modernize M&S' legacy technology.</li><li>TCS is conducting a full investigation into its potential role in the cyberattack.</li><li>M&S estimates the attack could cost around 300 million in lost operating profit.</li><li>Hackers from the DragonForce collective demanded payment in a mocking email to M&S CEO Stuart Machin.</li><li>M&S has not confirmed paying a ransom but admitted some customer data, excluding sensitive payment details, was stolen.</li><li>TCS has not responded to inquiries for comment on the matter.</li></ul>

Mystery of M&S hack deepens as TCS claims none of its systems were compromised

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