VIRGINIAHackingHealthcareHealthcareBusiness Associate (HIPAA)Customer Data InvolvedN-DayHealth (basic)Identity (basic)MediumContained

GUIDEHOUSE INC.

bd_a1315e93704516aa · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Jul 15, 2021

To disclose

—

Affected

91,331

Linked

4 filings

Confidence

50%

Full breach record for GUIDEHOUSE INC. →2 incidents on file

Guidehouse, a business associate, reported a cyber-attack on its secure file transfer device that affected 91,331 individuals. The breach, reported to HHS on 2021-07-15, compromised protected health information including names, dates of birth, diagnoses, conditions, and claims information. In response, Guidehouse applied a critical patch to mitigate the vulnerability, discontinued the compromised device, and transitioned to a different network.

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HIPAA clock✓ HHS notified

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

⚠ No discovery dateThe OCR public portal omits the discovery date, so the 60-day notification clock cannot be evaluated from this source — only that the filing was submitted.

Incident timeline — partial

? — ?

Breach window unknown

Jul 15, 2021

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Montana State AGbd_466ff546cdc0a84a2021-07-29 · +14dCandidate
Massachusetts State AGbd_0708f8c7afa7fc0a2021-06-28 · +17dVerified
Montana State AGbd_450f31b4b76577de2021-06-25 · +20dCandidate

Name: GUIDEHOUSE INC.
norm: guidehouse
Industry: Business Associate

Name: GUIDEHOUSE INC.
norm: guidehouse
Industry: Business Associate
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 91,331nationwide
Data types: Health (basic)Identity (basic)
HHS breach type: Hacking / IT incident
Where the data lived: Network server
Covered-entity type: Business associate
Attack vector: Unauthorized Access
Threat actor: External
Regulator citations: Notified HHSNotified affected individualsNotified the media

During the incident: Applied a critical patch shortly after the cyber-attack which mitigated the vulnerability
Changes made: Discontinued use of the file transfer device and transitioned to another network
Source: Quoted from the filing itself, not independently verified.

Compliance flags: HHS notified
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.
Clock breakdown: Statute Window Elapsed Threshold Status
HIPAA
Discovered: not extracted
→ Notified: not extracted
— regulatory submission HHS notified

Statute	Window	Elapsed	Threshold	Status
HIPAA	Discovered: not extracted → Notified: not extracted	—	regulatory submission	HHS notified

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 3 states

View merged incident ↗

Montana State AGJun 25 · first

Massachusetts State AG+3d

HHS OCR+20d · this page

Montana State AG+34d

Pattern: first filing Jun 25 (MT), last Jul 29 (MT) — a 34-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://ocrportal.hhs.gov/ocr/breach/breach_report.jsf
DisclosureLens renders the full SEC/HHS filing inline below from the originating regulator’s public record (§4.5 fair report privilege).
Filed at: Jul 15, 2021
Raw hash: 5d488483b483c39602e36c6156b081c9aecb1bb3684291572a5a445202fce343

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Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityGUIDEHOUSE INC.

Victim entityGUIDEHOUSE INC.

IncidentUnauthorized Access

Stated responseApplied a critical patch shortly after the cyber-attack which mitigated the vulnerability

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing