HackingHealthcareHealthcareStolen CredentialsCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Southcoast Health System, Inc

bd_d4a8a6ef5261a70a · schema v1 · pii pii-v1

Severity

Medium

Discovered

Feb 16, 2026

Filed

May 4, 2026

To disclose

11 weeks

Affected

2state residents only

Confidence

65%

Full breach record for Southcoast Health System, Inc →17 incidents on file

Southcoast Health System, Inc. notified Massachusetts residents of a breach on Feb 16, 2026, where a compromised user account led to unauthorized access to names and SSNs. The incident was reported to state regulators. Affected individuals were offered 24 months of credit monitoring and fraud assistance.

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Massachusetts clock⏱ MA AG >30d11 weeks discovery → filing

⚠ occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Incident timeline

discovery → filing · 11 weeks / 77 days

Feb 16, 2026

Begins

Feb 16, 2026

Discovered

May 4, 2026

Filed

vs. sector median

+2 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed2 affectedView incident

Name: Southcoast Health System, Inc
norm: southcoast health system

Name: Southcoast Health System, Inc
norm: southcoast health system
Industry: Healthcarellm

Discovered: Feb 16, 2026
Breach occurred: Feb 16, 2026
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 16, 2026
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: reported to Massachusetts Attorney General’s Officereported to the Massachusetts Office of Consumer Affairs and Business Regulation
Initial access: valid_credentials

During the incident: Launched an investigation
Reported to Massachusetts Attorney General’s Office and the Massachusetts Office of Consumer Affairs and Business Regulation
Providing you with access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge
Providing you with proactive fraud assistance
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 11 weeks(74 days from discovery to filing)
Compliance flags: MA AG >30d
Discovery-date grounding: occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

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://www.mass.gov/doc/2026-688-southcoast-health/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 4, 2026
Raw hash: 2ccda3b7730b8dd643203a6a7d0fbfece425f694d433a1da2e6ad9793b13118b

Reporting entitySouthcoast Health System, Inc

Victim entitySouthcoast Health System, Inc

Incidentdiscovered Feb 16, 2026

Stated responseLaunched an investigation

ComplianceMA AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov