HackingProfessional ServicesProfessional ServicesStolen CredentialsData ExfiltratedTargetedPIIIdentity (basic)Government IDMediumContained

Singleton Schreiber

bd_e45f7b24b7aefe20 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 8, 2021

Filed

Apr 29, 2022

To disclose

29 weeks

Affected

12state residents only

Linked

5 filings

Confidence

65%

Full breach record for Singleton Schreiber →2 incidents on file

Singleton Schreiber, LLP notified Montana residents of a data security incident discovered on October 8, 2021. Unauthorized access occurred between October 3-8, 2021, resulting in the acquisition of files containing personal information. The firm engaged forensic investigators and reported the incident to the FBI. Affected individuals were offered complimentary identity protection services.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 5 days

discovery → filing · 29 weeks / 203 days

Oct 3, 2021

Begins

Oct 8, 2021

Discovered

Apr 29, 2022

Filed

vs. sector median

+12 wks slower

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Indiana State AGbd_cb2f7f93a128d6782022-04-29Verified
New Hampshire State AGbd_f8b1ecc71c9eae932022-04-29Verified
Maine State AGbd_5e6ce38f9c3ac00e2022-05-24 · +25dVerified by operator
California State AGbd_78f63885f5ebaee22022-05-24 · +25dVerified

Name: Singleton Schreiber
norm: singleton schreiber
Domain: singletonschreiber.com

Name: Singleton Schreiber
norm: singleton schreiber
Domain: singletonschreiber.com
Industry: Professional Servicesllm

Discovered: Oct 8, 2021
Breach occurred: Oct 3, 2021 – Oct 8, 2021
Undetected for: 5 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 29, 2022
Affected individuals: 12state-resident count only
Data types: PIIIdentity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Regulator citations: reported the incident to the Federal Bureau of Investigation
Initial access: valid_credentials

During the incident: Launched an investigation
Took steps to secure our network
Engaged an independent digital forensics firm to assist with the investigation
Reported the incident to the Federal Bureau of Investigation
Offering you complimentary identity protection services through IDX
Changes made: Taken measures to improve our systems in an effort to mitigate against the evolving cybersecurity risks
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 29 weeks(203 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Indiana State AGApr 29 · first

New Hampshire State AGApr 29 · first

Montana State AGApr 29 · first · this page

Maine State AG+25d

California State AG+25d

Pattern: first filing Apr 29 (IN), last May 24 (CA) — a 25-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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-328.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 29, 2022
Raw hash: 61589b0b095f1f22c34d08d45356869d3f808935f2fa4852994a80b9d53f1863

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entitySingleton Schreiber

Victim entitySingleton Schreiber

Incidentdiscovered Oct 8, 2021

Stated responseLaunched an investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov