MalwareTechnologyInformationRansomwareCapture Stored DataData ExfiltratedData EncryptedCustomer Data InvolvedPIIIdentity (basic)LowContained

MACMILLAN HOLDINGS, LLC

bd_5da8d77d89a6ad62 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jun 25, 2022

Filed

Dec 1, 2022

To disclose

23 weeks

Affected

11state residents only

Linked

2 filings

Confidence

65%

Full breach record for MACMILLAN HOLDINGS, LLC →

Macmillan disclosed a ransomware incident where files were encrypted and data exfiltrated between June 16-25, 2022. The breach was discovered on June 25, 2022. Personal information (names) was accessed. Macmillan engaged third-party specialists, notified law enforcement, and offered 24 months of credit monitoring. No evidence of misuse was found.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 9 days

discovery → filing · 23 weeks / 159 days

Jun 16, 2022

Begins

Jun 25, 2022

Discovered

Dec 1, 2022

Filed

vs. sector median

+4 wks slower

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

New Hampshire State AGbd_28b1494eb1078ef12022-12-05 · +4dVerified

Name: MACMILLAN HOLDINGS, LLC
norm: macmillan holdings

Name: MACMILLAN HOLDINGS, LLC
norm: macmillan holdings
Industry: Technologyllm

Discovered: Jun 25, 2022
Breach occurred: Jun 16, 2022 – Jun 25, 2022
Undetected for: 9 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 1, 2022
Affected individuals: 11state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: promptly notified federal law enforcement

During the incident: Launched an investigation with the assistance of third-party specialists
Promptly notified federal law enforcement
Offered you access to twenty-four (24) months of complimentary credit monitoring and identity restoration services provided through Experian
Changes made: Instituted additional safeguards
Reviewing our existing policies and procedures regarding cybersecurity
Evaluate additional measures and safeguards to try to further protect against this type of incident in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 23 weeks(159 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Montana State AGDec 1 · first · this page

New Hampshire State AG+4d

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-754.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 1, 2022
Raw hash: cfb57bbc117f2f9d29bb05d91901638b7b6a28806cdbf71cd7002fc4f9ad2e71

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMACMILLAN HOLDINGS, LLC

Victim entityMACMILLAN HOLDINGS, LLC

Incidentdiscovered Jun 25, 2022

Stated responseLaunched an investigation with the assistance of third-party specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov