HackingHealthcareHealthcareStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDHighContained

OneBlood, Inc.

bd_4d599b95055a1ac1 · schema v1 · pii pii-v1

Severity

High

Discovered

Jul 28, 2024

Filed

Nov 13, 2025

To disclose

—

Affected

1,049state residents only

Linked

6 filings

Confidence

66%

Full breach record for OneBlood, Inc. →3 incidents on file

OneBlood, Inc. notified the Maryland Attorney General of a data event affecting 1,049 Maryland residents. Unauthorized access occurred between July 14 and July 29, 2024, when files containing names and Social Security numbers were copied from OneBlood's network. OneBlood became aware of suspicious activity on July 28, 2024, and notified federal law enforcement. Remediation included 12 months of credit monitoring via TransUnion.

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Incident timeline

undetected · 14 days

Jul 14, 2024

Begins

Jul 28, 2024

Discovered

Nov 13, 2025

Filed

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Oregon State AGbd_177bc67008aedc062025-01-09 · +308dCandidate
Massachusetts State AGbd_21809a99aff28c142025-01-09 · +308dVerified
South Carolina State AGbd_26194deb18bd76452025-01-09 · +308dVerified
Indiana State AGbd_6e9d8e191ff20a4d2025-01-09 · +308dVerified

Show 1 more filing ↓up to 308d gap

Maine State AGbd_a2871e1428a6a4802025-01-09 · +308dVerified by operator

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: OneBlood, Inc.
norm: oneblood
Domain: oneblood.org
Industry: Healthcarellm

Discovered: Jul 28, 2024
Breach occurred: Jul 14, 2024 – Jul 29, 2024
Undetected for: 14 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jan 9, 2025
Affected individuals: 1,049state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1119 Automated Collection
Threat actor: External
Regulator citations: Notified federal law enforcement
Initial access: valid_credentials

During the incident: Notified federal law enforcement
Provided access to credit monitoring services for twelve (12) months, through Transunion
Provided impacted individuals with guidance on how to better protect against identity theft and fraud
Provided written notice of this event to relevant state regulators
Provided written notice of this event to the three major credit reporting agencies, Equifax, Experian, and TransUnion
Changes made: Offered complimentary access to twelve (12) months of credit monitoring and identity theft restoration services, through TransUnion
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Oregon State AGJan 9 · first

Massachusetts State AGJan 9 · first

South Carolina State AGJan 9 · first

Indiana State AGJan 9 · first

Maine State AGJan 9 · first

Maryland State AG+308d · this page

Pattern: first filing Jan 9 (OR), last Nov 13 (MD) — a 308-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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.maryland.gov/resources-info/SBN%20Documents/2025/ITU-376158.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 13, 2025
Raw hash: 76919dbb7e4efe8d936e826434b055197fe3f5dfbba371cae23c36d21d25ddeb

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityOneBlood, Inc.

Incidentdiscovered Jul 28, 2024

Stated responseNotified federal law enforcement

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.maryland.gov