HackingProfessional ServicesProfessional ServicesStolen CredentialsCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

de Arrigoitia & Co

bd_98c3b07d3d5f3f23 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 7, 2017

Filed

Jul 19, 2017

To disclose

6 weeks

Affected

2state residents only

Confidence

66%

Full breach record for de Arrigoitia & Co →

de Arrigoitia & Co, PA notified Montana residents of a June 7, 2017 security incident where an unauthorized individual accessed systems, potentially exposing names, SSNs, and financial data. The firm engaged forensic investigators and offered one year of Kroll identity monitoring.

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Incident timeline

discovery → filing · 6 weeks / 42 days

Jun 7, 2017

Discovered

Jul 19, 2017

Filed

vs. sector median

13 wks faster

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

Name: de Arrigoitia & Co
norm: de arrigoitia

Name: de Arrigoitia & Co
norm: de arrigoitia
Industry: Professional Servicesllm

Discovered: Jun 7, 2017
Materiality determined: —
Notification sent: Jul 17, 2017
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Initial access: valid_credentials

During the incident: Hired an independent computer forensic firm to assist
Engaged Kroll to provide identity monitoring services at no cost to you for one year
Changes made: Strengthening our firewalls
Adding additional login security features
Reviewing our policies and procedures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(42 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/de-Arrigoitia-Co.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 19, 2017
Raw hash: 1959bcf8e68020e1d53cbebcc59d8e18eee65d80857d6b1a1ba31e0230c27672

Reporting entityde Arrigoitia & Co

Victim entityde Arrigoitia & Co

Incidentdiscovered Jun 7, 2017

Stated responseHired an independent computer forensic firm to assist

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov