The data breach appears to have been the result of a malware attack that compromised a number of the company's computer systems.
In Minnesota, the affected properties include the Holiday Inn in Detroit Lakes, the Holiday Inn Express in Bemidji and a number of other hotels across the state.
"The investigation identified signs of the operation of malware created to access payment card data from cards used onsite at front desks for certain IHG-branded franchise locations between September 29, 2016 and December 29, 2016", the company announced.
IHG has notified law enforcement and noted that IHG-branded franchise hotel locations which had implemented IHG's Secure Payment Solution (SPS), a point-to-point encryption payment acceptance solution, before the breach were not affected.
InterContinental Hotels Group (IHG) has released data disclosing how malware was used to steal customer payment card details from around 1,200 of its franchised properties. The list will be updated as the investigation continues.
"All three properties will draw synergies from IHG hotels located nearby and will reinforce our position in South West Asia". To learn which properties were impacted, guests need to search for hotels that may have been impacted on IHG's website.
IHG operates hotels around the world in nearly 100 countries, so it's unclear how far this breach goes.
"The investigation identified signs of the operation of malware created to access payment card data from cards used onsite at the front desk at certain IHG-branded franchise hotel locations". The infections were spotted on September 29, 2016 but the infections weren't cleared up until March 2017, and some hotels might still have a problem.
It is unclear exactly how many IHG customers were affected by the data breach. Alpha One also assigned news stories about the company an impact score of 50 out of 100, indicating that recent media coverage is somewhat likely to have an impact on the stock's share price in the immediate future. The list includes companies like Hilton, Trump Hotels, Starwood Hotels & Resorts, Hyatt Hotels and Kimpton.
IHG first told customers that a "dozen" United States locations had been infected with credit card-stealing malware back in February, but has this week admitted that things are worse than it first thought.
IHG recommends that all of its customers review their payment card statements for signs of fraud and contact their card issuer directly if they see any suspicious activity.