Excerpt from BBC
The owner of the Holiday Inn and Crowne Plaza hotel brands has disclosed that payment card-stealing malware has struck about 1,200 of its franchisees' properties.
UK-based Intercontinental Hotels Group (IHG) said all but one of the locations affected were in the US, with the other being in Puerto Rico.
Guests have been warned they could have had money stolen as a consequence.
One expert said there might be further hotels affected.
Buckinghamshire-based IHG had previously reported in February that a dozen US hotels that it managed itself had been affected by the same attack.
"Individuals should closely monitor their payment card account statements," a spokeswoman told the BBC following the latest discovery.
"If there are unauthorised charges, individuals should immediately notify their bank.
"Payment card network rules generally state that cardholders are not responsible for such charges."
Other affected brands include Hotel Indigo and Candlewood Suites.
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