2.6 Million Accounts’ Personal Sensitive Information Leaked: Major US Dental Insurance Administrator Hacked

DentalGoodNews｜On June 1, 2026, local time, DentaQuest, a major U.S. dental insurance management organization, issued a notice stating that it is handling a security incident involving unauthorized network access. According to SC Media, the hacker group ShinyHunters claimed to have stolen approximately 234GB of data from the company and publicly leaked the relevant data after failing to reach an agreement with DentaQuest.

According to an analysis by the Data Breach notification service platform Have I Been Pwned (HIBP), the publicly leaked 234GB of sensitive data includes personal identification information such as email addresses, names, phone numbers, dates of birth, genders, and government-issued ID numbers for 2.6 million accounts.

DentaQuest stated in its announcement that upon detecting the anomaly, it immediately took action to secure the environment and collaborated with cybersecurity experts, digital forensics specialists, and law enforcement agencies. Currently, its business systems are operating normally, with limited disruption to customer services. The company is making every effort to determine the full scope of the incident and the specific nature of the compromised data.