HackingHealthcareHealthcareSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedBusiness Associate (HIPAA)PHIIdentity (basic)Government IDHealth (basic)MediumContained

Nebraska Orthopaedic Center

bd_075703db34849ec0 · schema v1 · pii pii-v2

Severity

Medium

Discovered

Dec 18, 2025

Filed

Aug 20, 2026

To disclose

35 weeks

Affected

Not disclosed

Linked

5 filings

Confidence

65%

Full breach record for Nebraska Orthopaedic Center →

Nebraska Orthopaedic Center, P.C. notified California residents that a third-party vendor, Aesto LLC, experienced a security incident. Between December 2 and December 18, 2025, an unauthorized actor copied protected health information, including names, medical record numbers, dates of birth, and Social Security numbers. Aesto detected the incident on December 18, 2025. The organization engaged external cybersecurity professionals and is offering 12 months of credit monitoring to affected individuals.

J jump to incidentP pin to compareR raw source

California clockDiscovered Dec 18, 2025 → Notified Aug 18, 2026243d ✗ CA 60-day late35 weeks discovery → filing

Incident timeline

undetected · 16 days

discovery → filing · 35 weeks / 245 days

Dec 2, 2025

Begins

Dec 18, 2025

Discovered

Aug 20, 2026

Filed

vs. sector median

+24 wks slower

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Washington State AGbd_006679bfb3ccd1c92026-08-19 · +1dVerified
Oregon State AGbd_4750be7f8e77a00d2026-08-19 · +1dVerified
Vermont State AGbd_7cff054a53fd097f2026-08-19 · +1dVerified
Massachusetts State AGbd_9ddfa8bced87de0b2026-08-01 · +19dCandidate

Name: Nebraska Orthopaedic Center, P.C.
norm: nebraska orthopaedic center
Domain: aestohealth.com

Name: Nebraska Orthopaedic Center
norm: nebraska orthopaedic center
Domain: nebraskaortho.com
Industry: Healthcarellm

Discovered: Dec 18, 2025
Breach occurred: Dec 2, 2025 – Dec 18, 2025
Undetected for: 16 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 18, 2026
Affected individuals: Not disclosed
Data types: PHIIdentity (basic)Government IDHealth (basic)
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1041 Exfiltration Over C2 Channel
Threat actor: External
Third party: via Aesto LLC

During the incident: Commenced a prompt and thorough investigation
Worked very closely with external cybersecurity professionals experienced in handling these types of incidents
Conducted extensive forensic investigation and manual document review
Notified Covered Entities with impacted information of the incident
Offering a complimentary twelve (12) month membership of Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge
Set up a dedicated and confidential toll-free response line
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 35 weeks(245 days from discovery to filing)
Compliance flags: CA 60-day late · 243dCA AG copy ≤15d · 2d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Dec 18, 2025
→ Notified: Aug 18, 2026
243d 60 days (analyst band, pre-2026 discoveries) CA 60-day late
California
Consumers notified: Aug 18, 2026
→ AG copy submitted: Aug 20, 2026
2d 15 calendar days CA AG copy ≤15d

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Dec 18, 2025 → Notified: Aug 18, 2026	243d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late
California	Consumers notified: Aug 18, 2026 → AG copy submitted: Aug 20, 2026	2d	15 calendar days	CA AG copy ≤15d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Massachusetts State AGAug 1 · first

Washington State AG+18d

Oregon State AG+18d

Vermont State AG+18d

California State AG+19d · this page

Pattern: first filing Aug 1 (MA), last Aug 20 (CA) — a 19-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.ca.gov/ecrime/databreach/reports/sb24-628538
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 20, 2026
Raw hash: 7f37296fca3bb58908fd261a4543b8dc232e5185502f89881d3783bd6f934b7b

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityNebraska Orthopaedic Center, P.C.

Victim entityNebraska Orthopaedic Center

Incidentdiscovered Dec 18, 2025

Stated responseCommenced a prompt and thorough investigation

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov