UnknownEducationEducationGovernment IDFinancial accountMedium

Substitute Teacher Service

bd_1e246deb0cae191f · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Mar 14, 2025

To disclose

—

Affected

6state residents only

Linked

8 filings

Confidence

95%

Full breach record for Substitute Teacher Service →

Substitute Teacher Service, Inc. reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-03-14. 6 Massachusetts residents were affected.

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Leak gap clock⏱ Leak >30d

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

Mar 14, 2025

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 8 about the same incident.View merged incident

A leak claim by cicada3301 about this victim predates this filing by 34 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitecicada3301bd_5c5d2147a4a876d82025-02-08 · +34dVerified by operator

Regulatory filings (6) · sorted by filing gap

Maryland State AGbd_111021992bf6f5562025-03-12 · +2dVerified
Montana State AGbd_30de5097ad118e4d2025-03-12 · +2dCandidate
New Hampshire State AGbd_96fd64d242721c772025-03-12 · +2dVerified
Delaware State AGbd_05ca8d0db65cf27c2025-03-03 · +11dVerified by operator

Show 2 more filings ↓up to 27d gap

Indiana State AGbd_5e41e7fee095d80b2025-03-03 · +11dVerified by operator
Delaware State AGbd_126e3a2896b552682025-04-10 · +27dVerified by operator

Name: Substitute Teacher Service
norm: substitute teacher service
Domain: thesubservice.com

Name: Substitute Teacher Service
norm: substitute teacher service
Domain: thesubservice.com
Industry: Educationregulator portal

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 6state-resident count only
Data types: Government IDFinancial account
Data elements: Social Security numberFinancial account numberDriver's licence number
Stated not affected: Medical informationPayment card number
The filing states these were not involved. Categories absent from both lists were not addressed either way.
Attack vector: Unknown

Compliance flags: Leak >30dMA credit monitoring due
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 6 states

View merged incident ↗

Delaware State AGMar 3 · first

Indiana State AGMar 3 · first

Maryland State AG+9d

Montana State AG+9d

New Hampshire State AG+9d

Massachusetts State AG+11d · this page

Delaware State AG+38d

Pattern: first filing Mar 3 (DE), last Apr 10 (DE) — a 38-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/data-breach-report-2025/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 14, 2025
Raw hash: 4cc06710fcb28d6e5d4f5b6a816ac9f70f68191786c496a9126eea0b00b3c060

Linked disclosures

Ransomware claims (1)

Regulatory filings (6) · sorted by filing gap

Reporting entitySubstitute Teacher Service

Victim entitySubstitute Teacher Service

IncidentUnknown

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov