Substitute Teacher Service
bd_30de5097ad118e4d · schema v1 · pii pii-v1
Full breach record for Substitute Teacher Service →Substitute Teacher Service, Inc. notified Montana residents of a data security event. An unauthorized actor acquired database files containing names, SSNs, driver's license numbers, and financial account information starting December 22, 2024. Suspicious activity was identified on January 9, 2025. The company engaged forensic teams and is offering credit monitoring.
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Incident timeline
Dec 22, 2024
Begins
Jan 9, 2025
Discovered
Mar 12, 2025
Filed
vs. sector median
9 wks faster
Linked disclosures
Why this link?Ransomware claims (1)
- Leak Sitecicada3301bd_5c5d2147a4a876d82025-02-08 · +32dVerified by operator
Regulatory filings (6) · sorted by filing gap
- Maryland State AGbd_111021992bf6f5562025-03-12Verified
- New Hampshire State AGbd_96fd64d242721c772025-03-12Verified
- Massachusetts State AGbd_1e246deb0cae191f2025-03-14 · +2dVerified by operator
- Delaware State AGbd_05ca8d0db65cf27c2025-03-03 · +9dVerified by operator
Show 2 more filings ↓Show fewer ↑up to 29d gap
- Indiana State AGbd_5e41e7fee095d80b2025-03-03 · +9dVerified by operator
- Delaware State AGbd_126e3a2896b552682025-04-10 · +29dVerified by operator
Filing propagation · 7 filings · 6 states
View merged incident ↗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
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.