Delta Dental 2023 Data Breach

Delta Dental 2023 Data Breach

Healthcare / Dental

Delta Dental 2023 Data Breach

A dental service in the healthcare sector.

Confirmed · ObscureIQ Intelligence
Breach Risk Index i
46/100
Lower riskHigher risk
Moderate: notable exposure with meaningful misuse potential.
Data Sensitivity i
Standard
Exposed data is largely lower-sensitivity. Standard identity-protection precautions are advised.
802KRecords
2023Year

The Breach Risk Index (BRI) is a proprietary 0–100 score rating how dangerous a breach is right now, based on how recently the data has been circulating on the dark web and how valuable it is to attackers.

Crucial data exposed
AddressPhysical address
Classification Tags
Cl0p / CL0PHealthcareDentalMembers2023

Breach Summary

In 2023, Delta Dental was involved in a significant data breach affecting approximately 6.9 million individuals, primarily due to the global MOVEit Transfer software vulnerability. While the headline figure of 802,000 records has been circulated by cybersecurity researchers at Atlas Privacy as a specific subset of data—including names, home addresses, and phone numbers—that began appearing on hacker forums in late 2024, the broader 2023 incident compromised a much larger volume of sensitive information.

Full threat analysis, exploitation vectors, and principal guidance below.

11 additional sections · verified field analysis · defensive doctrine

Querying breach corpus…
Cross-referencing exposed field types…
Resolving threat-actor attribution…
Compiling principal risk advisory…

802K records analyzed

About Delta Dental

Delta Dental is a dental service in the healthcare sector.

Why They Hold Your Data

Delta Dental is a dental service in the healthcare sector. Services like this typically hold names, phone numbers, physical addresses through account registration and normal operations.

Recent Developments

The Delta Dental dataset circulated publicly; treat as part of the standing exposure landscape.

Data Points Exposed

3 verified field types
Full Name
Phone Number
Physical address High

Breach Impact

The exposure created downstream fraud and phishing risk for those affected and drew scrutiny of Delta Dental's data protection.

Exploitation & Downstream Threats

• SIM swap attacks where phone numbers are present | • Doxxing risk from physical address exposure

Principal Risk Advisory

What this means for a principal

A healthcare-linked breach: exposure ties a named individual to a provider relationship and, where clinical or insurance data is present, to conditions and treatment. For a high-profile principal this is targeting-grade, not merely identity-theft-grade: the combination lets an adversary locate, impersonate, or pressure the principal with little additional work.

What You Should Do

  1. Treat the home address as exposed: review mail and package handling and physical-security routines, and brief household staff to verify unusual requests.
  2. Guard against SIM-swap and vishing: add a carrier port-out PIN and verify any 'support' calls independently.
  3. Do not use unofficial 'am I affected' lookups; several are themselves harvesting operations.

How ObscureIQ Can Help

  1. Corpus confirmation: determine whether and where the principal (plus household and staff) appear in this dataset and which specific fields are exposed for them.
  2. Exposure mapping and footprint neutralization: cross-reference against broker-available data and suppress still-removable elements, prioritizing address and phone, since this record re-seeds broker networks.
  3. ThreatWatch tuned to this incident's identifiers and misuse pattern (impersonation and targeting patterns, not generic credential monitoring).
C/
Threat Actor: Cl0p / CL0PConfidence: High
Ransomware and mass exploitation group

Motivation: Financial extortion
A mature extortion group associated in public reporting with TA505 and FIN11-linked ecosystems. Cl0p is known for mass exploitation of managed file transfer products, including the 2023 MOVEit Transfer campaign exploiting CVE-2023-34362.

Read the full threat-actor profile →

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