Social EngineeringProfessional ServicesProfessional ServicesPhishingStolen CredentialsTargetedPIIIdentity (basic)Government IDMediumContained

Estate Administrative Services

bd_043508da63e42e43 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jan 12, 2022

Filed

Mar 1, 2022

To disclose

7 weeks

Affected

1state residents only

Confidence

65%

Full breach record for Estate Administrative Services →

Estate Administrative Services, LLC notified Montana residents of a data security incident involving unauthorized access to an employee's email account between September 3 and October 13, 2021. The breach likely exposed personal information contained in the mailbox. The company secured the email environment, investigated the scope, and offered one year of complimentary identity monitoring services through Kroll to affected individuals.

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Incident timeline

undetected · 131 days

discovery → filing · 7 weeks / 48 days

Sep 3, 2021

Begins

Jan 12, 2022

Discovered

Mar 1, 2022

Filed

vs. sector median

12 wks faster

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

Name: Estate Administrative Services
norm: estate administrative

Name: Estate Administrative Services
norm: estate administrative
Industry: Professional Servicesllm

Discovered: Jan 12, 2022
Breach occurred: Sep 3, 2021 – Oct 13, 2021
Undetected for: 131 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)Government ID
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: External
Initial access: phishing_link

During the incident: Took steps to ensure email environment was secure
Reviewed emails and attachments in the mailbox to identify impacted individuals
Arranged for complimentary one-year membership of identity monitoring services through Kroll
Implemented additional security measures to enhance the security of the email environment
Continued to train employees concerning data security
Changes made: Implemented additional security measures to enhance the security of the email environment
Continued to train employees concerning data security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(48 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/Estate-Administrative-Services-Consumer-Notification-Letter.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 1, 2022
Raw hash: 0320835a0396f320d075da00922f98f2c9ce0bec624dc6eb51669fba8deecb67

Reporting entityEstate Administrative Services

Victim entityEstate Administrative Services

Incidentdiscovered Jan 12, 2022

Stated responseTook steps to ensure email environment was secure

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov