DisclosureLens
MalwareEducationEducationRansomwareSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDPIIHighResolved

St. Sebastian's School

bd_d7d14264ebbda96e · schema v1 · pii pii-v1

Severity

High

Discovered

Sep 29, 2020

Filed

Nov 12, 2020

To disclose

6 weeks

Affected · nationwide

1,7213 in this filing

Linked

2 filings

Confidence

63%
Full breach record for St. Sebastian's School →2 incidents on file

St. Sebastian's School reported a data breach impacting 1,721 individuals due to a ransomware attack on a third-party vendor. The incident, which occurred on May 1, 2020, and was discovered on September 29, 2020, resulted in the exposure of names and Social Security numbers. The school offered affected individuals 24 months of identity monitoring and protection services through Kroll.

Maine clockDiscovered Sep 29, 2020 → Filed with AG Nov 12, 202044d ⏱ ME AG >30d6 weeks discovery → filing
⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 151 days
discovery → filing · 6 weeks / 44 days

May 1, 2020

Begins

Sep 29, 2020

Discovered

Nov 12, 2020

Filed

vs. sector median

1 wks faster

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Filing propagation · 2 filings · 2 states

View merged incident ↗
Massachusetts State AGNov 12 · first
Maine State AGNov 12 · first · this page

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.