HackingHealthcareHealthcareCustomer Data InvolvedPIIIdentity (basic)Government IDHealth (basic)PHIMediumContained

Harbor Developmental Disabilities Foundation

bd_5a812851b43801ce · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 7, 2026

Filed

May 28, 2026

To disclose

12 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 individuals of a data breach occurring on March 6-7, 2026, discovered on March 7, 2026. An unauthorized individual accessed personal information, including names, addresses, SSNs, and health records. The organization engaged forensic investigators and is providing 12 months of credit monitoring and fraud assistance to affected individuals in multiple states.

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Incident timeline

undetected · 1 days

discovery → filing · 12 weeks / 82 days

Mar 6, 2026

Begins

Mar 7, 2026

Discovered

May 28, 2026

Filed

vs. sector median

1 wks faster

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

Massachusetts State AGbd_4ec7c53651fae95d2026-04-22 · +36dVerified
HHS OCRbd_7b9cece4187569a92026-04-22 · +36dVerified
Indiana State AGbd_9b166fd801f03faf2026-04-22 · +36dVerified
California State AGbd_d9e6069e2c2c95352026-04-22 · +36dVerified

Show 1 more filing ↓up to 46d gap

California State AGbd_818cdfa0c33f731b2026-07-13 · +46dCandidate

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: May 28, 2026
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)Government IDHealth (basic)PHI
Attack vector: Unknown
Threat actor: External

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 for 12 months
Providing proactive fraud assistance through TransUnion/Cyberscout
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(82 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

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 · this page

California State AG+82d

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/sb24-624044
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 28, 2026
Raw hash: acc0c5e501201bcfc86096d01ed09997adbdf645128fca6e45e49a2c0605bd22

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

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov