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

6 filings

Confidence

66%

Full breach record for Antioch University →2 incidents on file

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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Incident timeline

discovery → filing · 48 weeks / 334 days

Aug 11, 2023

Discovered

Jul 10, 2024

Filed

vs. sector median

+38 wks slower

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

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

Show 1 more filing ↓

New Hampshire State AGbd_ba0e465e4d7cbb842024-07-10Verified

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: — (clock not assessable for this source)

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

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

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov