DisclosureLens
HackingEducationEducationStolen CredentialsSupply Chain (3P Vendor)Data ExfiltratedGovernment IDIdentity (basic)MediumContained

Archbishop Mitty High School

bd_d54320e159f150e9 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 1, 2020

Filed

Jun 16, 2021

To disclose

41 weeks

Affected

1state residents only

Linked

3 filings

Confidence

66%
Full breach record for Archbishop Mitty High School

Archbishop Mitty High School notified individuals of a data breach involving third-party vendor Blackbaud. In September 2020, Blackbaud disclosed that a cyber-attack exposed unencrypted legacy student data, including Social Security numbers and dates of birth, from its Financial Edge platform. The school is offering 24 months of credit monitoring and fraud assistance. No evidence of misuse was found at the time of notification.

Incident timeline

discovery → filing · 41 weeks / 288 days

Sep 1, 2020

Discovered

Jun 16, 2021

Filed

vs. sector median

+31 wks slower

This filing is one of 3 about the same incident.View merged incident
Part of BLACKBAUD, INC. supply-chain incident (2020) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Filing propagation · 3 filings · 3 states

View merged incident ↗
California State AGJun 16 · first
Montana State AGJun 16 · first · this page

Pattern: first filing Jun 16 (CA), last Jun 22 (NH) — a 6-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.