MalwareEducationEducationRansomwareData EncryptedTargetedPIILowContained

Antioch University

bd_9a7047aeffedf6ef · schema v1 · pii pii-v1

Severity

Low

Discovered

Aug 11, 2023

Filed

Jul 10, 2024

To disclose

48 weeks

Affected

2state residents only

Linked

7 records

Confidence

66%

Full breach record for Antioch University →

Coalition for the Common Good dba Antioch University notified Montana residents of a ransomware attack detected on August 11, 2023. The attacker accessed a limited number of systems. Antioch restored networks from backups, changed credentials, and engaged forensic investigators. Free credit monitoring is offered. No evidence of misuse found.

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Leak gap clock✗ Leak >180d48 weeks discovery → filing

Incident timeline

discovery → filing · 48 weeks / 334 days

Aug 11, 2023

Discovered

Jul 10, 2024

Filed

This filing is one of 7 records about the same incident.View merged incident

A leak claim by lockbit_3 about this victim was first seen 314 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitelockbit_3bd_04f85d8d7330469e2023-08-31 · +314dVerified by operator

Regulatory filings (5) · sorted by filing gap

Washington State AGbd_0d2f355cbd0063642024-07-10Candidate
Maine State AGbd_11e78d1f41e58ba32024-07-10Verified by operator
Vermont State AGbd_5bac71a2b97f19c12024-07-10Verified by operator
Indiana State AGbd_93b5291efc880dd02024-07-10Verified by operator

Show 1 more filing ↓

New Hampshire State AGbd_ba0e465e4d7cbb842024-07-10Verified by operator

Name: Coalition for the Common Good
norm: coalition for the common good
Domain: antioch.edu

Name: Antioch University
norm: antioch university
Domain: antioch.edu
Also named: Coalition for the Common Gooddba oflegal entity
Antioch Universitydba oftrade name
Industry: Educationllm

Discovered: Aug 11, 2023
Materiality determined: —
Notification sent: Jul 10, 2024
Affected individuals: 2state-resident count only
Data types: PII
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: ExternalFinancial

During the incident: Disconnected all access to the network
Engaged legal counsel and specialized cybersecurity professionals to conduct a forensic investigation
Securely restore our network from backups
Changed administrative credentials
Installed a new firewall
Upgraded our intrusion detection software
Engaged a cybersecurity firm to monitor our network activity
Offering free credit monitoring and identity theft protection services
Changes made: Changed administrative credentials
Installed a new firewall
Upgraded our intrusion detection software
Engaged a cybersecurity firm to monitor our network activity
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 48 weeks(334 days from discovery to filing)
Compliance flags: Leak >180d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Washington State AGJul 10 · first

Maine State AGJul 10 · first

Vermont State AGJul 10 · first

Indiana State AGJul 10 · first

New Hampshire State AGJul 10 · first

Montana State AGJul 10 · 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.

Source URL: https://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-1530.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 10, 2024
Raw hash: 589aab6b7796dd5ff675371cd1f5a284ad2a68471264022a31ffaae2d77f4145

Linked disclosures

Ransomware claims (1)

Regulatory filings (5) · sorted by filing gap

Reporting entityCoalition for the Common Good

Victim entityAntioch University

Incidentdiscovered Aug 11, 2023

Stated responseDisconnected all access to the network

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancedojmt.gov