Social EngineeringFinancial ServicesFinancePhishingStolen CredentialsTargetedPIIIdentity (basic)LowContained

Byrne Insurance Group

bd_4d90bb60cbf7f9a1 · schema v1 · pii pii-v1

Severity

Low

Discovered

Nov 2, 2020

Filed

Apr 7, 2021

To disclose

22 weeks

Affected

1state residents only

Linked

2 filings

Confidence

65%

Full breach record for Byrne Insurance Group →

Byrne Insurance Group notified Montana residents of unauthorized access to an employee's email account between Oct 6 and Nov 2, 2020. The incident likely resulted from phishing. Personal information was potentially accessed. Kroll provided one year of identity monitoring.

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Incident timeline

undetected · 27 days

discovery → filing · 22 weeks / 156 days

Oct 6, 2020

Begins

Nov 2, 2020

Discovered

Apr 7, 2021

Filed

vs. sector median

+13 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

Indiana State AGbd_7e582aaa908b48e92021-04-07Verified

Name: Byrne Insurance Group
norm: byrne insurance

Name: Byrne Insurance Group
norm: byrne insurance
Industry: Financial Servicesllm

Discovered: Nov 2, 2020
Breach occurred: Oct 6, 2020 – Nov 2, 2020
Undetected for: 27 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 9, 2021
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: External
Initial access: phishing_link

During the incident: Secured the account
Launched an investigation with the assistance of an outside IT security firm
Engaged Kroll to provide complimentary identity monitoring for a period of one year
Changes made: Conducting a comprehensive review of our cybersecurity defenses and protocols
Providing additional cybersecurity training to employees with access to personal information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 22 weeks(156 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 ↗

Indiana State AGApr 7 · first

Montana State AGApr 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/Byrne-Notif.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 7, 2021
Raw hash: 41c8224c03d9aab8ddae6a460fa632f01dbc531fa065d250f9712555a0c5214d

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityByrne Insurance Group

Victim entityByrne Insurance Group

Incidentdiscovered Nov 2, 2020

Stated responseSecured the account

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov