Social EngineeringProfessional ServicesProfessional ServicesPhishingStolen CredentialsTargetedData ExfiltratedGovernment IDPIIMediumContained

Quad-C Management, L.P.

bd_06b1b4d1fa4d9d7e · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 1, 2018

Filed

Jun 7, 2018

To disclose

10 weeks

Affected

2state residents only

Linked

2 filings

Confidence

65%

Full breach record for Quad-C Management, L.P. →

Quad-C Management, Inc. notified Montana residents of a data breach in June 2018. An unauthorized individual accessed an employee's email account in April 2018, potentially obtaining Social Security Numbers. The company engaged forensic investigators, blocked access, and offered two years of Experian IdentityWorks monitoring.

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Incident timeline

discovery → filing · 10 weeks / 67 days

Apr 1, 2018

Begins

Apr 1, 2018

Discovered

Jun 7, 2018

Filed

vs. sector median

8 wks faster

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_3558cde7c66db0242018-06-07Verified

Name: Quad-C Management, L.P.
norm: quad c management
Domain: qc-inc.com

Name: Quad-C Management, L.P.
norm: quad c management
Domain: qc-inc.com
Industry: Professional Servicesllm

Discovered: Apr 1, 2018
Breach occurred: Apr 1, 2018
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 7, 2018
Affected individuals: 2state-resident count only
Data types: Government IDPII
Data elements: Social Security number
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Took immediate steps to block the unauthorized individual
Brought in a well-known, third-party forensic firm to investigate the matter
Offering a complimentary two-year membership in Experian IdentityWorks
Strengthening information security controls and procedures
Changes made: Strengthening information security controls and procedures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 10 weeks(67 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 ↗

New Hampshire State AGJun 7 · first

Montana State AGJun 7 · 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/Quad-C-Management-Inc..pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 7, 2018
Raw hash: f21d938465cbbc7d346175018e1e7e1fd04b7b63cda786cddeeabb38268bcc21

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityQuad-C Management, L.P.

Victim entityQuad-C Management, L.P.

Incidentdiscovered Apr 1, 2018

Stated responseTook immediate steps to block the unauthorized individual

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov