DentaQuest Breach Affects 15 Million in Largest US Health Data Breach Reported in 2026
DentaQuest says a May 2026 network breach affected 15 million people, exposing Social Security numbers and dental or vision health information. The post DentaQuest Breach Affects 15 Million in Largest US Health Data Breach Reported in 2026 appeared first on TechRepublic .
A May 2026 cyberattack on DentaQuest, a leading dental and vision benefits administrator, resulted in the exposure of sensitive personal and health information for 15 million individuals, marking the largest healthcare data breach in the United States so far in 2026. The compromised data may have included Social Security numbers, names, addresses, Medicaid and Medicare numbers, member identification numbers, and dental or vision health information.
DentaQuest notified affected individuals and federal regulators, and is now providing credit monitoring, fraud consultation, and identity theft restoration services to those impacted. The stolen data could potentially be used for identity theft and fraud due to its combination of ordinary identity data with healthcare and government identifiers.
Though DentaQuest has not publicly identified the attackers, one ransomware group claimed responsibility and leaked about 234 GB of data. As the investigation continues, the final figures on the number of affected individuals and the full extent of the exposed data remain unknown.
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