Skip to main content
Data breach

DentaQuestdentaquest.com

2 553 599 accounts exposed in a breach dated 2026-05-23.

Breached2026-05-23Added to HIBP2026-06-03 UTCUpdated by HIBP2026-06-03 UTCAccounts2 553 599Domaindentaquest.com
Verified

What happened in Have I Been Pwned’s words

In May 2026, the dental benefits administrator DentaQuest was the target of a ShinyHunters "pay or leak" extortion campaign that resulted in the group publicly publishing hundreds of gigabytes of data allegedly obtained from the company. The data included 2.6M unique email addresses along with names, addresses and phone numbers. Much of the data appeared in healthcare enrollment files (ASC X12 transaction sets) with some containing Medicaid IDs, while additional data appeared in member records and related files. DentaQuest acknowledged "a cybersecurity incident involving unauthorized access to a limited portion of our network", and advised they had contained the attack and mitigated the threat.

Exposed data as HIBP classifies it

  • Dates of birth
  • Email addresses
  • Genders
  • Government issued IDs
  • Health insurance information
  • Names
  • Phone numbers
  • Physical addresses

How HIBP qualifies it

  • HIBP verified that the data came from this service.