Social EngineeringHealthcareTechnologyHealthcarePhishingStolen CredentialsSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDHealth (basic)PHIMediumContained

Cogeco

bd_07430268c34bd8f4 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 21, 2022

Filed

Oct 14, 2022

To disclose

30 weeks

Affected

176state residents only

Linked

2 filings

Confidence

66%

Full breach record for Cogeco →2 incidents on file

Conifer Value-Based Care, LLC, a subcontractor for Cogeco US Finance (dba Breezeline), experienced a phishing incident affecting Microsoft Office 365 email accounts. Access occurred March 17-22, 2022. Personal information including SSNs, DOBs, and PHI of 176 NH residents was exposed. Conifer engaged forensic investigators, reset passwords, blocked malicious IPs, and implemented MFA. Credit monitoring offered.

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Incident timeline

undetected · 4 days

discovery → filing · 30 weeks / 207 days

Mar 17, 2022

Begins

Mar 21, 2022

Discovered

Oct 14, 2022

Filed

vs. sector median

+18 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

Massachusetts State AGbd_6531ee0774b01d8d2022-10-11 · +3dVerified

Name: Cogeco
norm: cogeco
Domain: corpo.cogeco.com

Name: Cogeco
norm: cogeco
Domain: corpo.cogeco.com
Industry: HealthcarellmTechnologyllm

Discovered: Mar 21, 2022
Breach occurred: Mar 17, 2022 – Mar 22, 2022
Undetected for: 4 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 11, 2022
Affected individuals: 176state-resident count only
Data types: Identity (basic)Government IDHealth (basic)PHI
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1114 Email CollectionT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Office of the Attorney General
Initial access: phishing_link

During the incident: Engaged a leading security firm
Resetting the user password for the business email accounts where unauthorized activity was detected
Blocking malicious IP addresses and URLs
Changes made: Enhance its security controls and monitoring practices
Accelerated its implementation of multifactor authentication for all business email accounts
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 30 weeks(207 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 ↗

Massachusetts State AGOct 11 · first

New Hampshire 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://mm.nh.gov/files/uploads/doj/remote-docs/cogeco-us-finance-dba-breezeline-fka-atlantc-broadband-20221014.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 14, 2022
Raw hash: 6a2c50802282e3c6362e55f2002940120e5d7ae7d52cc94f90cfcf9b293e4657

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityCogeco

Victim entityCogeco

Incidentdiscovered Mar 21, 2022

Stated responseEngaged a leading security firm

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov