NEW YORK (CBSNewYork)Donald Trump‘s hotel chain says its payment data system was breached, potentially exposing customers’ credit and debit card information for more than a year.

The Trump Hotel Collection said Thursday it found malware that may have given hackers access to payment information, including account numbers, expiration dates and security codes, but it has not found any conclusive evidence that the information was taken or misused.

The data breach occurred between May 19, 2014, and June 2, 2015. The chain listed seven hotels whose customers were potentially impacted, including Trump SoHo New York and Trump International New York. The others are Trump National Doral, Trump International Chicago, Trump International Waikiki, Trump International Hotel & Tower Las Vegas and Trump International Toronto.

After learning of the breach, the Trump Hotel Collection said it notified the FBI and financial institutions and hired an outside forensic expert to investigate.

Hotel officials said the malware has been removed and they’re confident customers can safely pay using cards at all of their properties.

The hotel chain offered several recommendations for customers who believe their information might have been compromised:

• Check past credit and debit card statements for unusual activity
• Continue to closely monitor future statements
• Check credit reports for accounts you did not open or inquiries from creditors you did not initiate
If you find any suspicious activity, contact local police.

The Trump Hotel Collection is offering a year of complimentary fraud resolution and identity-protection services to all of its customers who paid using credit or debit cards from May 19, 2014, to and June 2, 2015.