Hotels.com is warning nearly a quarter-million customers that they may have had their credit card numbers stolen, following the theft of an unencrypted laptop belonging to the travel website’s auditor, Ernst & Young Global.The laptop was stolen in late February after an Ernst & Young employee left it inside a locked vehicle, according to Hotels.com Senior Compliance Officer Cathy Bump. Ernst & Young notified Hotels.com of the theft on May 3, and after determining which customers were affected by the data breach, the two companies began sending out letters last week notifying approximately 243,000 customers of the theft.The laptop contained names, addresses, and credit or debit card information, mostly related to Hotels.com transactions that occurred in 2004, although some customers who made purchases in 2003 and 2002 were also affected.The computer was stolen somewhere in Texas, though Bump would not name the city where the theft occurred. Hotels.com, which is owned by Expedia, is based in Dallas. The combination of tough data breach-notification laws and stolen laptops is keeping compliance officers such as Bump very busy these days. Last month, the U.S. Department of Veterans Affairs reported that a stolen laptop and external hard drive were to blame in the loss of sensitive information on 26.5 million U.S. veterans. And Fidelity Investments lost confidential information on nearly 200,000 Hewlett-Packard employees earlier this year under similar circumstances.There is no indication that the thief was trying to steal sensitive information, and there have been no indications to date that the stolen information has been misused, said Ernst & Young spokesman Ken Kerrigan. Since the theft, however, Ernst & Young has encrypted data on all laptops within its U.S. and Canadian operations, Kerrigan said.Ernst & Young is offering one year’s free credit monitoring to all Hotels.com customers affected by the breach.– Robert McMillan, IDG News ServiceFor related news coverage, check out our Special Report: VA Data Theft.Keep checking in at our CSO Security Feed for more updated news coverage. Related content news analysis DHS unveils one common platform for reporting cyber incidents Ahead of CISA cyber incident reporting regulations, DHS issued a report on harmonizing 52 cyber incident reporting requirements, presenting a model common reporting platform that could encompass them all. By Cynthia Brumfield Sep 25, 2023 10 mins Regulation Regulation Regulation news Chinese state actors behind espionage attacks on Southeast Asian government The distinct groups of activities formed three different clusters, each attributed to a specific APT group. By Shweta Sharma Sep 25, 2023 4 mins Advanced Persistent Threats Cyberattacks feature How to pick the best endpoint detection and response solution EDR software has emerged as one of the preeminent tools in the CISO’s arsenal. Here’s what to look for and what to avoid when choosing EDR software. By Linda Rosencrance Sep 25, 2023 10 mins Intrusion Detection Software Security Monitoring Software Data and Information Security feature Top cybersecurity M&A deals for 2023 Fears of recession, rising interest rates, mass tech layoffs, and conservative spending trends are likely to make dealmakers cautious, but an ever-increasing need to defend against bigger and faster attacks will likely keep M&A activity steady in By CSO Staff Sep 22, 2023 24 mins Mergers and Acquisitions Data and Information Security IT Leadership Podcasts Videos Resources Events SUBSCRIBE TO OUR NEWSLETTER From our editors straight to your inbox Get started by entering your email address below. Please enter a valid email address Subscribe