HackingProfessional ServicesProfessional ServicesData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

Substitute Teacher Service

bd_05ca8d0db65cf27c · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jan 9, 2025

Filed

Mar 3, 2025

To disclose

8 weeks

Affected

Not disclosed

Linked

8 filings

Confidence

66%

Full breach record for Substitute Teacher Service →

Substitute Teacher Service, Inc. notified individuals of a data security event where an unauthorized actor accessed database files containing names, SSNs, driver's license numbers, and financial account information. The incident was discovered on January 9, 2025, involving activity starting December 22, 2024. The company engaged forensic teams and is offering credit monitoring services.

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Incident timeline

undetected · 18 days

discovery → filing · 8 weeks / 53 days

Dec 22, 2024

Begins

Jan 9, 2025

Discovered

Mar 3, 2025

Filed

vs. sector median

10 wks faster

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

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitecicada3301bd_5c5d2147a4a876d82025-02-08 · +23dVerified by operator

Regulatory filings (6) · sorted by filing gap

Indiana State AGbd_5e41e7fee095d80b2025-03-03Verified by operator
Maryland State AGbd_111021992bf6f5562025-03-12 · +9dVerified
Montana State AGbd_30de5097ad118e4d2025-03-12 · +9dCandidate
New Hampshire State AGbd_96fd64d242721c772025-03-12 · +9dVerified

Show 2 more filings ↓up to 38d gap

Massachusetts State AGbd_1e246deb0cae191f2025-03-14 · +11dVerified by operator
Delaware State AGbd_126e3a2896b552682025-04-10 · +38dVerified 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: Professional Servicesllm

Discovered: Jan 9, 2025
Breach occurred: Dec 22, 2024
Undetected for: 18 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Initial access: exploit_public_facing

During the incident: Engaged leading cybersecurity forensic teams to assist in investigating the incident
Offering complimentary credit monitoring services through CyEx
Changes made: Enhanced comprehensive security measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(53 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 6 states

View merged incident ↗

Indiana State AGMar 3 · first

Delaware State AGMar 3 · first · this page

Maryland State AG+9d

Montana State AG+9d

New Hampshire State AG+9d

Massachusetts State AG+11d

Delaware State AG+38d

Pattern: first filing Mar 3 (IN), 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://attorneygeneral.delaware.gov/wp-content/uploads/sites/50/2025/03/REG_Rev2.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 3, 2025
Raw hash: 2861d96f2c05c7ee0e367f3f16ddc08bbf55e37fd14d69b8f805015add421b84

Linked disclosures

Ransomware claims (1)

Regulatory filings (6) · sorted by filing gap

Reporting entitySubstitute Teacher Service

Victim entitySubstitute Teacher Service

Incidentdiscovered Jan 9, 2025

Stated responseEngaged leading cybersecurity forensic teams to assist in investigating the incident

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceattorneygeneral.delaware.gov