Tata Consultancy Services carries out internal probe into M&S hack

India’s Tata Consultancy Services is conducting an internal investigation to determine whether it was the gateway for a cyberattack on UK’s Marks and Spencer that compromised customer data and disrupted the retailer’s operations, FT reported on Friday.

The Indian IT company, which has provided services to M&S for more than a decade, hopes to conclude the probe by the end of the month, the report said, citing people familiar with the matter.

India’s Ashok Leyland beats quarterly profit view on demand for high-margin heavy vehicles

Reuters could not immediately confirm the report.

M&S declined to comment and TCS did not immediately respond to a Reuters request for comment.

The cyberattack which M&S disclosed in April will cost the company about 300 million pounds ($404.9 million) in lost operating profit, and disruption to online services is likely until July.