Social EngineeringFinancial ServicesFinancePhishingStolen CredentialsCustomer Data InvolvedTargetedGovernment IDFinancial accountMediumContained

COR Clearing LLC (COR)

bd_811aad3fb0c4d079 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 7, 2018

Filed

Dec 12, 2018

To disclose

14 weeks

Affected

1state residents only

Linked

2 filings

Confidence

66%

Full breach record for COR Clearing LLC (COR) →

COR Clearing LLC notified individuals of a security incident where unauthorized logins to employee email accounts occurred. A bad actor used an employee account to send phishing emails. Personal information including SSNs, driver's license numbers, and financial account info may have been present in the accessed emails. No evidence of actual access or misuse was found. FBI was notified, and affected individuals were offered two years of Experian IdentityWorks.

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Incident timeline

discovery → filing · 14 weeks / 96 days

Sep 7, 2018

Discovered

Dec 12, 2018

Filed

vs. sector median

+5 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_3c1402609f88a0d32018-12-11 · +1dCandidate

Name: COR Clearing LLC (COR)
norm: cor clearing llc cor
Domain: corclearing.com

Name: COR Clearing LLC (COR)
norm: cor clearing llc cor
Domain: corclearing.com
Industry: Financial Servicesllm

Discovered: Sep 7, 2018
Materiality determined: —
Notification sent: Dec 31, 2018
Affected individuals: 1state-resident count only
Data types: Government IDFinancial account
Data elements: Social Security number
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified the FBI
Initial access: phishing_link

During the incident: Conducting a thorough internal forensic investigation
The FBI has also been notified
Changes made: Offering a complimentary two-year membership in Experian’s IdentityWorks®
Providing identity restoration support for two years
Working to ensure that we have robust policies and systems in place that are designed to prevent future phishing attacks
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 14 weeks(96 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 AGDec 11 · first

Montana State AG+1d · 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/COR-Clearing-LLC-COR.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 12, 2018
Raw hash: c751c7d0c94bad421d07b1671aa9efce34d8b136868f7a23d1ed74626a160da5

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityCOR Clearing LLC (COR)

Victim entityCOR Clearing LLC (COR)

Incidentdiscovered Sep 7, 2018

Stated responseConducting a thorough internal forensic investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov