Last week, Hyatt announced that they’ve had a credit card breach, which has affected over 40 of their properties worldwide, including the following in the US: Grand Hyatt Kauai Resort and Spa, Hyatt Regency Maui Resort and Spa and the Andaz Maui at Wailea Resort between March 18, 2017 and July 2, 2017 you may be part of the breach.

Per Hyatt Hotels and Resorts:

We understand the importance of protecting customer information and securing our systems, and we regret to inform you that we discovered signs of and then resolved unauthorized access to payment card information from cards manually entered or swiped at the front desk of certain Hyatt-managed locations between March 18, 2017 and July 2, 2017. A list of affected hotels and respective at-risk dates is available here.

Upon discovery, we launched a comprehensive investigation to understand what happened and how this occurred, including engaging leading third-party experts, payment card networks and authorities. Based on our investigation, we understand that such unauthorized access to card data was caused by an insertion of malicious software code from a third party onto certain hotel IT systems. Our enhanced cybersecurity measures and additional layers of defense implemented over time helped to identify and resolve the issue. I want to assure you that there is no indication that information beyond that gained from payment cards – cardholder name, card number, expiration date and internal verification code – was involved, and as a result of implemented measures designed to prevent this from happening in the future, guests can feel confident using payment cards at Hyatt hotels worldwide.

While we estimate that the incident affected a small percentage of payment cards used by guests who visited the group of affected Hyatt hotels during the at-risk time period, the available information and data does not allow Hyatt to identify each specific payment card that may have been affected. It’s important to Hyatt that we notify guests and provide helpful information about steps they can take, and we have directly contacted all guests for whom we have appropriate contact information that checked in to an affected hotel during the at-risk dates. As always, the primary step customers can take is to review their payment card account statements closely and report any unauthorized charges to their card issuer immediately.

Be sure to review all your credit card charges carefully and look out for unauthorized charges. You can also reach out to your credit card companies to add fraud alerts to your account and request new card numbers as well.