The hotel chain has listed all the infected locations worldwide on its website, and people who recently stayed at a Hyatt may want to check it out. See, even if most of the cards affected were used at restaurants, a smaller number were used to pay at the hotel chain's front desks, spas and gift shops. The company says it has already taken "steps to strengthen the security of [its] systems" in order to prevent this from happening again. If you stayed at one of the compromised locations during the timespan mentioned above, make sure to monitor your credit card transactions and quickly report any suspicious activity.

[Image credit: Michelle Bennett via Getty Images]