HackingProfessional ServicesProfessional ServicesData ExfiltratedCustomer Data InvolvedPIIIdentity (basic)LowContained

Singleton Schreiber

bd_78f63885f5ebaee2 · schema v1 · pii pii-v1

Severity

Low

Discovered

Oct 8, 2021

Filed

May 24, 2022

To disclose

33 weeks

Affected

Not disclosed

Linked

5 filings

Confidence

64%

Full breach record for Singleton Schreiber →2 incidents on file

Singleton Schreiber, LLP discovered a data security incident on October 8, 2021, involving unauthorized access to its network between October 3 and October 8, 2021. Files were acquired from the network environment. The firm engaged forensic investigators, secured its network, and notified the FBI. Affected individuals were offered complimentary identity protection services.

J jump to incidentP pin to compareR raw source

California clockDiscovered Oct 8, 2021 → Notified Apr 29, 2022203d ✗ CA 60-day late33 weeks discovery → filing

Incident timeline

undetected · 5 days

discovery → filing · 33 weeks / 228 days

Oct 3, 2021

Begins

Oct 8, 2021

Discovered

May 24, 2022

Filed

vs. sector median

+15 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

Maine State AGbd_5e6ce38f9c3ac00e2022-05-24Verified by operator
Indiana State AGbd_cb2f7f93a128d6782022-04-29 · +25dVerified
Montana State AGbd_e45f7b24b7aefe202022-04-29 · +25dCandidate
New Hampshire State AGbd_f8b1ecc71c9eae932022-04-29 · +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: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Unknown
MITRE ATT&CK: T1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Reported the incident to the Federal Bureau of Investigation

During the incident: Launched an investigation
Took steps to secure our network
Engaged an independent digital forensics firm to assist with the investigation
Launched a comprehensive review of the potentially affected files
Reported the incident to the Federal Bureau of Investigation
Offering 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: 33 weeks(228 days from discovery to filing)
Compliance flags: CA 60-day late · 203d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Oct 8, 2021
→ Notified: Apr 29, 2022
203d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Oct 8, 2021 → Notified: Apr 29, 2022	203d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Indiana State AGApr 29 · first

Montana State AGApr 29 · first

New Hampshire State AGApr 29 · first

Maine State AG+25d

California State AG+25d · this page

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://oag.ca.gov/ecrime/databreach/reports/sb24-553670
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 24, 2022
Raw hash: 65da71aa5141d99ea078c38f43c349704e7a50a474bd49058db06aa40e0ea69e

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entitySingleton Schreiber

Victim entitySingleton Schreiber

Incidentdiscovered Oct 8, 2021

Stated responseLaunched an investigation

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov