Hotel chains across the US 'targeted by hackers' for months
Hyatt, Sheraton, Marriott and Westin hotels in 10 US states and the District of Columbia may have been targeted by hackers for months, operator HEI Hotels & Resorts said.
Malware put into place in at least 20 locations may have collected names, card account numbers, card expiration dates and verification codes, according to HEI.
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