HackingHealthcareProfessional ServicesHealthcareStolen CredentialsCapture Stored DataSupply Chain (3P Vendor)Customer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDHealth (basic)Financial accountHighContained

LABORATORY CORPORATION OF AMERICA HOLDINGS

bd_eb0456665111f559 · schema v1 · pii pii-v1

Severity

High

Discovered

May 14, 2019

Filed

Jul 13, 2019

To disclose

9 weeks

Affected

4,823state residents only

Linked

8 filings

Confidence

65%

Full breach record for LABORATORY CORPORATION OF AMERICA HOLDINGS →5 incidents on file

LabCorp notified Montana AG of a third-party breach involving its vendor, American Medical Collection Agency (AMCA). AMCA experienced unauthorized access to its web payment page between August 1, 2018, and March 30, 2019. LabCorp was informed on May 14, 2019. Affected data included patient names, addresses, DOBs, SSNs (potentially), and health insurance info. LabCorp's systems were not directly affected.

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Incident timeline

undetected · 286 days

discovery → filing · 9 weeks / 60 days

Aug 1, 2018

Begins

May 14, 2019

Discovered

Jul 13, 2019

Filed

vs. sector median

4 wks faster

This filing is one of 8 about the same incident.View merged incident

Part of Retrieval-Masters Creditors Bureau, Inc supply-chain incident (2019) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (7) · sorted by filing gap

HHS OCRbd_3372e6a02aca0a242019-07-13Verified
Washington State AGbd_7826d26cbfc754222019-07-13Verified
South Carolina State AGbd_af36a8d2ef2267392019-07-15 · +2dVerified by operator
California State AGbd_bb71fbf6fb9ef2682019-07-15 · +2dVerified

Show 3 more filings ↓up to 4d gap

New Hampshire State AGbd_0b3589b29539db7b2019-07-16 · +3dVerified
Massachusetts State AGbd_3d616b53be77be772019-07-17 · +4dVerified by operator
Oregon State AGbd_d4aa5c9a608674422019-07-17 · +4dVerified

Name: LABORATORY CORPORATION OF AMERICA HOLDINGS
norm: laboratory corporation of america
Domain: labcorp.com

Name: LABORATORY CORPORATION OF AMERICA HOLDINGS
norm: laboratory corporation of america
Domain: labcorp.com
Industry: HealthcarellmProfessional Servicesllm

Discovered: May 14, 2019
Breach occurred: Aug 1, 2018 – Mar 30, 2019
Undetected for: 286 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 4,823state-resident count only
Data types: Identity (basic)Government IDHealth (basic)Financial account
Data elements: Social Security numberDate of birth
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Third party: via American Medical Collection Agency
Initial access: valid_credentials

During the incident: Stopped sending new collection requests to AMCA
Stopped AMCA from continuing to work on any pending LabCorp collection requests
Offering a complimentary two-year membership of Experian’s IdentityWorks
Changes made: Work closely with vendors and business associates to enhance the security of patient health and personal information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(60 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 8 states

View merged incident ↗

HHS OCRJul 13 · first

Washington State AGJul 13 · first

Montana State AGJul 13 · first · this page

South Carolina State AG+2d

California State AG+2d

New Hampshire State AG+3d

Massachusetts State AG+4d

Oregon State AG+4d

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://dojmt.gov/wp-content/uploads/OCP/Breach-NotificationDetails-37.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 13, 2019
Raw hash: 8fad04527ea716f787a3f700ceb047faa6d793c4803bdae60e15c475b7a1fa8b

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entityLABORATORY CORPORATION OF AMERICA HOLDINGS

Victim entityLABORATORY CORPORATION OF AMERICA HOLDINGS

Incidentdiscovered May 14, 2019

Stated responseStopped sending new collection requests to AMCA

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov