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ShinyHunters Leak 234 GB DentaQuest Data, 2.6 M Affected

6/7/2026

Summary

Story summary

ShinyHunters released a 234-GB cache of DentaQuest data after the firm refused to pay.
DentaQuest confirmed the leak revealed health-insurance data for roughly 2.6 million individuals, and posted a notice on June 2, 2026 after detecting unauthorized access on June 1, 2026.
The company has not reported the breach to U.S. Health and Human Services (HHS) or state attorneys general, risking a notification-law violation and ranking among the three largest U.S. health data breaches of 2026.

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Story summary

ShinyHunters released a 234-GB cache of DentaQuest data after the firm refused to pay.
DentaQuest confirmed the leak revealed health-insurance data for roughly 2.6 million individuals, and posted a notice on June 2, 2026 after detecting unauthorized access on June 1, 2026.
The company has not reported the breach to U.S. Health and Human Services (HHS) or state attorneys general, risking a notification-law violation and ranking among the three largest U.S. health data breaches of 2026.