HackingProfessional ServicesProfessional ServicesStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDHealth (basic)MediumContained

Ohnstad Twitchell, P.C.

bd_6d528102bee31065 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jan 13, 2020

Filed

Jun 10, 2020

To disclose

21 weeks

Affected

2state residents only

Confidence

67%

Full breach record for Ohnstad Twitchell, P.C. →

Ohnstad Twitchell, P.C. notified Montana residents of unauthorized access to two email accounts on Jan 13, 2020. An unauthorized third party accessed emails potentially containing names, DOBs, SSNs, and medical info. The firm engaged forensic investigators, reset passwords, and implemented MFA and spam filtering. No specific count of affected individuals was disclosed.

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Incident timeline

discovery → filing · 21 weeks / 149 days

Jan 13, 2020

Discovered

Jun 10, 2020

Filed

vs. sector median

+3 wks slower

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

Name: Ohnstad Twitchell, P.C.
norm: ohnstad twitchell

Name: Ohnstad Twitchell, P.C.
norm: ohnstad twitchell
Industry: Professional Servicesllm

Discovered: Jan 13, 2020
Materiality determined: —
Notification sent: —
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government IDHealth (basic)
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Engaged an outside law firm and IT Forensics firm to assist with its investigation
Changed the affected user’s email password immediately
Hired an expert outside IT Forensics firm to respond to and investigate the incident
Changes made: Deploying multi-factor authentication
Deploying a third-party spam email filtering tool
Providing additional training to its employees
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 21 weeks(149 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/Breach-NotificationDetails-185.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 10, 2020
Raw hash: ca055431a4406244138336beeae7993ccb5e99ea1833069ac3ea785d550bc4c8

Reporting entityOhnstad Twitchell, P.C.

Victim entityOhnstad Twitchell, P.C.

Incidentdiscovered Jan 13, 2020

Stated responseEngaged an outside law firm and IT Forensics firm to assist with its investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov