DentaQuest data breach
From Breaches, in the HARD wiki · Updated
This article is about the May 2026 breach of DentaQuest. For every breach, see Breaches.
The DentaQuest data breach exposed 2,553,599 accounts from dentaquest.com in May 2026. The data taken includes dates of birth, government issued IDs, names and physical addresses and 4 more kinds of data.[1]
Have I Been Pwned verified it and added it to its search on 3 Jun 2026, within a month. It is the 282nd largest of the 618 breaches in HARD’s list.
What was exposed
DentaQuest’s breach included 8 kinds of data. What each lets criminals do:
| Data | What it’s used for |
|---|---|
| Dates of birth | Used to prove who you are to banks and phone companies. |
| Government issued IDs | Enough to open accounts or take out loans in your name. |
| Names | Makes scam messages personal enough to believe. |
| Physical addresses | Used to prove who you are, and for scam letters and parcels. |
| Email addresses | Expect scam emails that name the company to look genuine. |
| Phone numbers | Expect scam texts and calls, and a higher risk of someone moving your number to their SIM. |
| Health insurance information | Private, and now in someone else’s hands. |
| Genders | Personal details that make scam messages more convincing. |
What to do
- Check whether you’re in it.Search your email address on Have I Been Pwned. It tells you which breaches it appears in, DentaQuest among them, without showing the data.
- Distrust messages that mention DentaQuest.Scammers use breach data to sound genuine. Don’t click links in emails or texts about the breach; go to the site yourself.
- Put a PIN on your phone account.Ask your mobile provider for a port-out PIN, so no one can move your number to their SIM.
- Freeze your credit.In the US, free at Equifax, Experian and TransUnion. In Australia, ask Equifax, Experian and illion for a ban. No one can open credit in your name while it’s on.
Timeline
- : the breach, as best it can be dated.
- : Have I Been Pwned verifies the data and adds it to its search, within a month.
Similar breaches
Breaches that leaked the same kinds of data, closest in time:
- Odido, February 2026, 6.1 million accounts
- JCPenney, June 2026, 368,418 accounts
- Angel One, April 2023, 6.8 million accounts
- Glendale Community College, June 2026, 793,925 accounts
- Sharecare, August 2026, 318,185 accounts
- Miljödata, August 2025, 870,108 accounts
See Breaches for all 618, and Updates for keeping your devices patched.
References
- ^ Troy Hunt. “DentaQuest”, Have I Been Pwned, added 3 Jun 2026. Breach data licensed CC BY 4.0.
External links
- Have I Been Pwned, to check your email address
- dentaquest.com, DentaQuest’s website