MalwareEducationEducationRansomwareData ExfiltratedData EncryptedSupply Chain (3P Vendor)Identity (basic)Financial accountPIILowContained

National Council of Teachers of Mathematics

bd_b2c7bd0bc72c0fd5 · schema v1 · pii pii-v1

Severity

Low

Discovered

Mar 16, 2021

Filed

Apr 15, 2021

To disclose

4 weeks

Affected

1state residents only

Confidence

62%

Full breach record for National Council of Teachers of Mathematics →

National Council of Teachers of Mathematics (NCTM) notified Montana AG of a ransomware attack on third-party vendor BrightKey, Inc. occurring Nov 25, 2020. NCTM learned of the incident on March 16, 2021. Attackers exfiltrated donor/member PII including names, addresses, bank routing numbers, and credit card info. NCTM is conducting an independent inquiry.

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Incident timeline

undetected · 111 days

discovery → filing · 4 weeks / 30 days

Nov 25, 2020

Begins

Mar 16, 2021

Discovered

Apr 15, 2021

Filed

vs. sector median

4 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident

Name: National Council of Teachers of Mathematics
norm: national council of teachers of mathematics
Domain: nctm.org

Name: National Council of Teachers of Mathematics
norm: national council of teachers of mathematics
Domain: nctm.org
Industry: Educationllm

Discovered: Mar 16, 2021
Breach occurred: Nov 25, 2020
Undetected for: 111 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 14, 2021
Affected individuals: 1state-resident count only
Data types: Identity (basic)Financial accountPII
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial

During the incident: Conducting an independent inquiry into this incident
Following up with BrightKey to verify data retrieval
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(30 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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/a-notif-59.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 15, 2021
Raw hash: 58a39cc28dc8290023a7a591e857bb2e6034a142adba3c84689118361a1b314a

Reporting entityNational Council of Teachers of Mathematics

Victim entityNational Council of Teachers of Mathematics

Incidentdiscovered Mar 16, 2021

Stated responseConducting an independent inquiry into this incident

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov