SOUTH DAKOTAMalwareHealthcareHealthcareMalware OtherCustomer Data InvolvedHealth (basic)Identity (basic)Government IDHighResolved

Siouxland Anesthesiology, Ltd.

bd_2d96a0a6f2582f71 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Jul 31, 2015

To disclose

—

Affected

13,000

Confidence

95%

Full breach record for Siouxland Anesthesiology, Ltd. →

Siouxland Anesthesiology, Ltd. (SD) reported to HHS OCR on 2015-07-31 a Hacking/IT Incident affecting approximately 13,000 individuals. Hackers infiltrated a network server and installed malware, leaving patients' ePHI vulnerable. Exposed data included names, addresses, dates of birth, and in some cases Social Security numbers. The CE replaced the compromised server, secured workstations, updated password management, and provided credit monitoring to affected individuals. OCR provided technical assistance on risk analysis and policy improvements.

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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 31, 2015

Filed

—

No filing yet · watching

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

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed13,000 affectedView incident

Name: Siouxland Anesthesiology, Ltd.
norm: siouxland anesthesiology
Industry: Health Care Services

Name: Siouxland Anesthesiology, Ltd.
norm: siouxland anesthesiology
Industry: Health Care Services
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 13,000nationwide
Data types: Health (basic)Identity (basic)Government ID
HHS breach type: Hacking / IT incident
Where the data lived: Network server
Covered-entity type: Healthcare provider
Attack vector: Unauthorized Access
MITRE ATT&CK: T1204 User ExecutionT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: HHS OCR reviewed the incident and provided technical assistance on policy/procedure changes, enterprise-wide risk analyses, and risk management process updates.

During the incident: Disabled the compromised server and replaced it with a new server
Examined all workstations to ensure they were secure
Established user controls and updated password management procedures
Provided affected individuals with credit monitoring information
Reported breach to individuals, media, and HHS
Changes made: Replaced compromised server
Updated password management procedures
Established user controls
Conducted enterprise-wide risk analysis per OCR guidance
Reviewed and updated risk management process
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.

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 31, 2015
Raw hash: 709a0831b9fc43d5a97c7e1951b255205ae699eb5c8b6819948a4fb0514c6ecc

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Reporting entitySiouxland Anesthesiology, Ltd.

Victim entitySiouxland Anesthesiology, Ltd.

IncidentUnauthorized Access

Stated responseDisabled the compromised server and replaced it with a new server

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing