HackingHealthcareHealthcareVulnerability ExploitSupply Chain (3P Vendor)Customer Data InvolvedIdentity (basic)Government IDHealth (basic)Financial accountMediumContained

LABORATORY CORPORATION OF AMERICA HOLDINGS

bd_bb71fbf6fb9ef268 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 14, 2019

Filed

Jul 15, 2019

To disclose

9 weeks

Affected

Not disclosed

Linked

8 filings

Confidence

65%

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

LabCorp notified California residents that its vendor, American Medical Collection Agency (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 may include names, addresses, phone numbers, dates of birth, referring physicians, dates of service, health insurance information, and potentially Social Security Numbers. LabCorp stopped using AMCA and offered two years of identity monitoring.

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Leak gap clock✗ Leak >180d9 weeks discovery → filing

Incident timeline

undetected · 286 days

discovery → filing · 9 weeks / 62 days

Aug 1, 2018

Begins

May 14, 2019

Discovered

Jul 15, 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

South Carolina State AGbd_af36a8d2ef2267392019-07-15Verified by operator
New Hampshire State AGbd_0b3589b29539db7b2019-07-16 · +1dVerified
Massachusetts State AGbd_3d616b53be77be772019-07-17 · +2dVerified by operator
Oregon State AGbd_d4aa5c9a608674422019-07-17 · +2dVerified

Show 3 more filings ↓up to 2d gap

HHS OCRbd_3372e6a02aca0a242019-07-13 · +2dVerified
Washington State AGbd_7826d26cbfc754222019-07-13 · +2dVerified
Montana State AGbd_eb0456665111f5592019-07-13 · +2dVerified by operator

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: Healthcarellm

Discovered: May 14, 2019
Breach occurred: Aug 1, 2018 – Mar 30, 2019
Undetected for: 286 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
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: T1190 Exploit Public-Facing Application
Threat actor: External
Third party: via American Medical Collection Agency
Initial access: external_remote_services

During the incident: Promptly 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: Continue to work closely with our 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(62 days from discovery to filing)
Compliance flags: Leak >180d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

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

South Carolina State AG+2d

California State AG+2d · this page

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://oag.ca.gov/ecrime/databreach/reports/sb24-148937
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 15, 2019
Raw hash: 6633751237620458b36655e345ee0621adeccbdec4c0b60a8744f0b720e7f6e4

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 responsePromptly stopped sending new collection requests to AMCA

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov