TransUnion, a major credit reporting agency based in Chicago, disclosed a data breach impacting the personal information of approximately 4.4 million consumers across the United States. The breach, which occurred in July 2025, involved unauthorized access through an unidentified third-party support application. While the company confirmed that credit reports were not accessed during the incident, it has not specified the exact nature of the compromised data. In response, TransUnion is offering affected customers two years of free identity theft monitoring and access to a dedicated fraud assistance line. The company has notified those impacted and emphasized the growing challenges in cybersecurity, highlighting the importance of safeguarding personal information.