A luxury hotel group is advising event organisers to check credit card bills following a major data breach.
Mandarin Oriental has said credit card data has been stolen in a hack attack on the company’s network.
Banking industry sources said the data breach dates back to last December and has affected Mandarin hotels in the US and Europe.
Security experts said it is possible the credit card details were swiped on compromised payment terminals at restaurants and shops in Mandarin hotels, rather than from the hotel’s front desk.
A spokeswoman for the hotel chain said it is not yet clear exactly how many hotels were hit nor how much data had gone missing.
She said it was carrying out an investigation and would provide more details when they were available.
The spokeswoman added: “If you suspect any unauthorised activity on your card, we recommend you contact your credit card provider directly. The incident is a direct result of an unauthorised cyber-attack. Unfortunately incidents of this nature are increasingly becoming an industry-wide concern and therefore we have also alerted our technology peers in the hospitality industry. The group has identified and removed the malware and is coordinating with credit card agencies, law enforcement authorities and forensic specialists to ensure that all necessary steps are taken to fully protect our guests and our systems across our portfolio. We take the protection of customer information very seriously.”
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