HackingProfessional ServicesProfessional ServicesStolen CredentialsCustomer Data InvolvedPIIIdentity (basic)LowContained

Phillabaum, Ledlin, Matthews & Sheldon PLLC

bd_509304e2a1bf7427 · schema v1 · pii pii-v1

Severity

Low

Discovered

Aug 3, 2022

Filed

Nov 23, 2022

To disclose

16 weeks

Affected

1state residents only

Confidence

65%

Full breach record for Phillabaum, Ledlin, Matthews & Sheldon PLLC →

Phillabaum, Ledlin, Matthews & Sheldon PLLC notified Montana residents of a data security incident where unauthorized parties accessed employee email accounts between August 3-5, 2022. The breach exposed names and other personal information. The firm engaged a cybersecurity firm, secured accounts, changed passwords, and offered one year of identity theft protection services.

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Incident timeline

discovery → filing · 16 weeks / 112 days

Aug 3, 2022

Begins

Aug 3, 2022

Discovered

Nov 23, 2022

Filed

vs. sector median

3 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident

Name: Phillabaum, Ledlin, Matthews & Sheldon PLLC
norm: phillabaum ledlin matthews sheldon

Name: Phillabaum, Ledlin, Matthews & Sheldon PLLC
norm: phillabaum ledlin matthews sheldon
Industry: Professional Servicesllm

Discovered: Aug 3, 2022
Breach occurred: Aug 3, 2022 – Aug 5, 2022
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 23, 2022
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Took steps to secure the email accounts identified
Began an investigation with the assistance of a cybersecurity firm
Offering one year of identity theft protection services through IDX
Changed passwords
Implemented additional security measures and controls in our network
Changes made: Changed passwords
Implemented additional security measures and controls in our network
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 weeks(112 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-752.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 23, 2022
Raw hash: 5fd012da1f0b2770c063ae547c561fe2175135273eef29859c6a990c422e07da

Reporting entityPhillabaum, Ledlin, Matthews & Sheldon PLLC

Victim entityPhillabaum, Ledlin, Matthews & Sheldon PLLC

Incidentdiscovered Aug 3, 2022

Stated responseTook steps to secure the email accounts identified

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov