It appears that another major hotel chain has suffered a data breach.

Last week, Hyatt Hotels notified customers through a post on their website that they have discovered malicious software on their point of sale systems.

The company only said that they are currently conducting an investigation into the discovery, so details at this point in time are scarce. They are working with "leading third party cyber security experts" and have eliminated the malware from their systems.

"Hyatt has taken steps to strengthen the security of its systems, and customers can feel confident using payment cards at Hyatt hotels worldwide," the company stated in the release.

Hyatt is urging customers to review card statements and report any fraudulent charges immediately. They also informed customers that updates on the investigation will be posted to the "protecting our customers" portion of their website.

According to Krebs on Security, the company operates 627 properties in 52 countries as of this past September 30. It is currently unclear how many of these properties were affected or for how long.

This year has not been a strong one for major hotel chain cybersecurity. Trump Hotels, Starwood Hotels, Hilton and others have been hacked in this same fashion: malware installed in point of sale systems. Interestingly, in these cases it was not the hotel systems themselves that were affect, but, rather, those of retail stores and restaurants located on the properties. Hyatt has yet to disclose what specific systems were impacted, saying only that malware was found in "payment processing systems for Hyatt-managed locations."

It will be curious to see as more details emerge how this incident aligns with the previous hotel breaches.

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