CALIFORNIAHackingHealthcareHealthcareCustomer Data InvolvedPHIHealth (basic)Identity (basic)Low

Ouster, Inc.

bd_e91793f961a8d52b · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Apr 30, 2026

To disclose

—

Affected

574

Confidence

68%

Full breach record for Ouster, Inc. →

Ouster, Inc. reported to HHS on 2026-04-30 a Unauthorized Access/Disclosure affecting 574 individuals. Breached information located on Network Server.

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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

Apr 30, 2026

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.Confirmed574 affectedView incident

Name: Ouster, Inc.
norm: ouster
Industry: Insurance — Health

Name: Ouster, Inc.
norm: ouster
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 574nationwide
Data types: PHIHealth (basic)Identity (basic)
HHS breach type: Unauthorized access or disclosure
Where the data lived: Network server
Covered-entity type: Health plan
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Regulator citations: Notified HHS OCR

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: Apr 30, 2026
Raw hash: 166d8bd9f3b025e9360b052c7042496c0eeff4db04313f5d80be80d41c992a54

AI-assisted summary above. The structured extract on this page was generated from the document below. Inspect the source to verify or correct any field.

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Reporting entityOuster, Inc.

Victim entityOuster, Inc.

IncidentUnauthorized Access

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing