Social EngineeringOtherPhishingTargetedIdentity (basic)Government IDMediumContained

CACTUS WELLHEAD, LLC

bd_2c8e0aac6de3eccb · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 9, 2018

Filed

May 17, 2018

To disclose

8 days

Affected

1state residents only

Confidence

65%

Full breach record for CACTUS WELLHEAD, LLC →

Cactus Wellhead, LLC notified Montana employees of a phishing incident on May 9, 2018. An employee's credentials were compromised via a phishing email impersonating senior management, resulting in the unauthorized release of 2017 Form W-2s containing names, addresses, and SSNs. The company provided two years of identity theft protection and implemented stricter approval procedures.

J jump to incidentP pin to compareR raw source

Incident timeline

discovery → filing · 8 days

May 9, 2018

Begins

May 9, 2018

Discovered

May 17, 2018

Filed

vs. sector median

5 wks faster

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

Name: CACTUS WELLHEAD, LLC
norm: cactus wellhead

Name: CACTUS WELLHEAD, LLC
norm: cactus wellhead
Industry: Otherllm

Discovered: May 9, 2018
Breach occurred: May 9, 2018
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 17, 2018
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security numberDate of birth
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Reporting the incident to appropriate state agencies and federal authorities
Initial access: phishing_link

During the incident: Working with outside resources to help avoid or minimize negative consequences
Reporting the incident to appropriate state agencies and federal authorities
Providing each impacted employee with free identity theft protection services through ID Experts for two years
Changes made: Upgrading policies, training, and systems to ensure associates can better recognize phishing emails
Implementing procedures to ensure information cannot be accessed or sent out without approvals from two members of senior management
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 days(8 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/Cactus-Wellhead-LLC.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 17, 2018
Raw hash: 7addbbf4f0f163f4eadb906f014a431d045c12a6114bd047cfe2ed04a822afb4

Reporting entityCACTUS WELLHEAD, LLC

Victim entityCACTUS WELLHEAD, LLC

Incidentdiscovered May 9, 2018

Stated responseWorking with outside resources to help avoid or minimize negative consequences

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov