Social EngineeringManufacturingManufacturingPhishingStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedData ExfiltratedPIIIdentity (basic)EmploymentLowContained

KOCH INDUSTRIES, LLC

bd_91b64f1e858b4e3d · schema v1 · pii pii-v1

Severity

Low

Discovered

Jan 12, 2021

Filed

Feb 8, 2021

To disclose

27 days

Affected

1state residents only

Linked

3 filings

Confidence

65%

Full breach record for KOCH INDUSTRIES, LLC →

Koch Industries, Inc. notified Montana residents of a phishing incident where employee credentials were compromised, leading to unauthorized access to email mailboxes. The breach occurred between January 8 and January 12, 2021. Personal information, including names and employment data, was exfiltrated. Koch reset passwords, enforced MFA, and offered one year of credit monitoring.

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Incident timeline

undetected · 4 days

discovery → filing · 27 days

Jan 8, 2021

Begins

Jan 12, 2021

Discovered

Feb 8, 2021

Filed

vs. sector median

7 wks faster

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Indiana State AGbd_3f4e7fba1605d0382021-02-08Verified
Massachusetts State AGbd_b6f5848526d446512021-02-05 · +3dVerified

Name: KOCH INDUSTRIES, LLC
norm: koch industries

Name: KOCH INDUSTRIES, LLC
norm: koch industries
Industry: Manufacturingllm

Discovered: Jan 12, 2021
Breach occurred: Jan 8, 2021 – Jan 12, 2021
Undetected for: 4 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 8, 2021
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)Employment
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Resetting all affected passwords
Forced re-authentication of all affected user accounts
Reviewed email configuration and blocked legacy email protocols where not explicitly required
Reconfirming that connections to email boxes trigger multi-factor authentication
New security alerts around legacy email protocols
Offering identity protection and credit monitoring services for one year
Changes made: Reviewed email configuration and blocked legacy email protocols where not explicitly required
Reconfirming that connections to email boxes trigger multi-factor authentication
New security alerts around legacy email protocols
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 27 days(27 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Massachusetts State AGFeb 5 · first

Indiana State AG+3d

Montana State AG+3d · 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/Koch-Notification-Letter-2.8.21-L01.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 8, 2021
Raw hash: ad460de6cbe5513fd95323e65e0533ff2825db9d927338e455271e61004a4abf

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityKOCH INDUSTRIES, LLC

Victim entityKOCH INDUSTRIES, LLC

Incidentdiscovered Jan 12, 2021

Stated responseResetting all affected passwords

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov