HackingHealthcareHealthcareCustomer Data InvolvedPIIIdentity (basic)LowContained

Harbor Developmental Disabilities Foundation

bd_818cdfa0c33f731b · schema v1 · pii pii-v1

Severity

Low

Discovered

Mar 7, 2026

Filed

Jul 13, 2026

To disclose

18 weeks

Affected

Not disclosed

Linked

6 filings

Confidence

65%

Full breach record for Harbor Developmental Disabilities Foundation →

Harbor Developmental Disabilities Foundation (d/b/a Harbor Regional Center) notified the California Attorney General of a data breach occurring on March 6-7, 2026. The organization became aware of unusual network activity on March 7, 2026. An investigation revealed that an unauthorized individual accessed certain personal information. The incident is contained. Affected individuals are offered 12 months of credit monitoring and fraud assistance services.

J jump to incidentP pin to compareR raw source

California clockDiscovered Mar 7, 2026 → Notified Jul 13, 2026128d ✗ CA 30-day late18 weeks discovery → filing

Incident timeline

undetected · 1 days

discovery → filing · 18 weeks / 128 days

Mar 6, 2026

Begins

Mar 7, 2026

Discovered

Jul 13, 2026

Filed

vs. sector median

+6 wks slower

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

California State AGbd_5a812851b43801ce2026-05-28 · +46dCandidate
Massachusetts State AGbd_4ec7c53651fae95d2026-04-22 · +82dVerified
HHS OCRbd_7b9cece4187569a92026-04-22 · +82dVerified
Indiana State AGbd_9b166fd801f03faf2026-04-22 · +82dVerified

Show 1 more filing ↓up to 82d gap

California State AGbd_d9e6069e2c2c95352026-04-22 · +82dVerified

Name: Harbor Developmental Disabilities Foundation
norm: harbor developmental disabilities

Name: Harbor Developmental Disabilities Foundation
norm: harbor developmental disabilities
Also named: Harbor Developmental Disabilities Foundationdba oflegal entity
Harbor Regional Centerdba oftrade name
Industry: Healthcarellm

Discovered: Mar 7, 2026
Breach occurred: Mar 6, 2026 – Mar 7, 2026
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Jul 13, 2026
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Unknown
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Submitted breach notification to California Attorney General

During the incident: Retained legal counsel and third-party forensic specialists to investigate the unusual activity
Began a comprehensive review of the data set to determine what sensitive and/or personal information was impacted
Providing access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge
Providing proactive fraud assistance through Cyberscout
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 18 weeks(128 days from discovery to filing)
Compliance flags: CA 30-day late · 128d
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: Mar 7, 2026
→ Notified: Jul 13, 2026
128d 30 calendar days CA 30-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Mar 7, 2026 → Notified: Jul 13, 2026	128d	30 calendar days	CA 30-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 3 states

View merged incident ↗

Massachusetts State AGApr 22 · first

HHS OCRApr 22 · first

Indiana State AGApr 22 · first

California State AGApr 22 · first

California State AG+36d

California State AG+82d · this page

Pattern: first filing Apr 22 (MA), last Jul 13 (CA) — a 82-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/sb24-626408
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 13, 2026
Raw hash: 9b6bc9b05ae4b1dcf218fb3e41436176eb6f8663b9fa69a64c0bc4f4ead6f531

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityHarbor Developmental Disabilities Foundation

Victim entityHarbor Developmental Disabilities Foundation

Incidentdiscovered Mar 7, 2026

Stated responseRetained legal counsel and third-party forensic specialists to investigate the unusual activity

ComplianceCA 30-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov