Mystery of M&S hack deepens as TCS claims none of its systems were compromised
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- TCS says none of its systems or users were affected in Marks and Spencer attack
- M&S was hit by a major cyberattack earlier in 2025
- TCS vowed an investigation, but has offered little information so far
The third-party supplier many have blamed for the major cyberattack against Marks and Spencer (M&S) has revealed its first findings of an internal investigation into its role in the incident.
Tata Consultancy Services (TCS) has said none of its "systems or users were compromised" as part of the cyberattack.
"As no TCS systems or users were compromised, none of our other customers are impacted" independent director Keki Mistry told its annual shareholder meeting, Reuters reports.



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