HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedPIIIdentity (basic)LowContained

Yosemite Capital Management

bd_a7bca891bc0f35f0 · schema v1 · pii pii-v1

Severity

Low

Discovered

Mar 23, 2022

Filed

Aug 30, 2022

To disclose

23 weeks

Affected

2state residents only

Confidence

66%

Full breach record for Yosemite Capital Management →

Yosemite Capital Management notified Montana residents of a March 23, 2022 data security incident involving unauthorized access to its email environment. The breach potentially exposed names and other personal information. The company engaged cybersecurity experts, secured its environment, and offered 12 months of credit monitoring via TransUnion.

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Incident timeline

discovery → filing · 23 weeks / 160 days

Mar 23, 2022

Begins

Mar 23, 2022

Discovered

Aug 30, 2022

Filed

vs. sector median

+15 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed2 affectedView incident

Name: Yosemite Capital Management
norm: yosemite capital management

Name: Yosemite Capital Management
norm: yosemite capital management
Industry: Financial Servicesllm

Discovered: Mar 23, 2022
Breach occurred: Mar 23, 2022
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 15, 2022
Affected individuals: 2state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Initial access: valid_credentials

During the incident: Engaged leading, independent cybersecurity experts to help us to conduct an investigation
Took steps to secure our digital environment
Offering 12 months of complimentary credit and identity monitoring services through TransUnion
Changes made: Implementing additional technical security measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 23 weeks(160 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/OCP/Consumer-Notification-Letter-527.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 30, 2022
Raw hash: f379abb461dc99edbf59f61d714964025bba70269bc356390fb3188f33549514

Reporting entityYosemite Capital Management

Victim entityYosemite Capital Management

Incidentdiscovered Mar 23, 2022

Stated responseEngaged leading, independent cybersecurity experts to help us to conduct an investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov