HackingHealthcareHealthcareCustomer Data InvolvedPIIIdentity (basic)LowContained

Harbor Developmental Disabilities Foundation

bd_4ec7c53651fae95d · schema v1 · pii pii-v1

Severity

Low

Discovered

Mar 7, 2026

Filed

Apr 22, 2026

To disclose

7 weeks

Affected

1state residents only

Linked

6 filings

Confidence

64%

Full breach record for Harbor Developmental Disabilities Foundation →

Harbor Developmental Disabilities Foundation (DBA Harbor Regional Center) notified individuals that unauthorized access occurred on March 6-7, 2026, after detecting unusual activity on March 7, 2026. The organization retained forensic specialists and legal counsel. Personal information may have been viewed or copied. Credit monitoring services were offered. The incident is contained.

J jump to incidentP pin to compareR raw source

Massachusetts clock⏱ MA AG >30d7 weeks discovery → filing

Incident timeline

undetected · 1 days

discovery → filing · 7 weeks / 46 days

Mar 6, 2026

Begins

Mar 7, 2026

Discovered

Apr 22, 2026

Filed

vs. sector median

6 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

HHS OCRbd_7b9cece4187569a92026-04-22Verified
Indiana State AGbd_9b166fd801f03faf2026-04-22Verified
California State AGbd_d9e6069e2c2c95352026-04-22Verified
California State AGbd_5a812851b43801ce2026-05-28 · +36dCandidate

Show 1 more filing ↓up to 82d gap

California State AGbd_818cdfa0c33f731b2026-07-13 · +82dCandidate

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: Apr 2, 2026
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)
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: 7 weeks(46 days from discovery to filing)
Compliance flags: MA AG >30d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 3 states

View merged incident ↗

HHS OCRApr 22 · first

Indiana State AGApr 22 · first

California State AGApr 22 · first

Massachusetts State AGApr 22 · first · this page

California State AG+36d

California State AG+82d

Pattern: first filing Apr 22 (CA), 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://www.mass.gov/doc/2026-623-harbor-developmental-disabilities-foundation-dba-harbor-regional-center/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 22, 2026
Raw hash: 81ff448ecc2a28c168093f053d50cdcbb6c9bc6fb88184bebd0918012f0ac330

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

ComplianceMA AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov