HackingProfessional ServicesProfessional ServicesCustomer Data InvolvedIdentity (basic)LowContained

Reisz Siderman Eisenberg, APC

bd_440d4c338042ca39 · schema v1 · pii pii-v1

Severity

Low

Discovered

Aug 23, 2025

Filed

Mar 6, 2026

To disclose

28 weeks

Affected

Not disclosed

Linked

2 filings

Confidence

64%

Full breach record for Reisz Siderman Eisenberg, APC →

Reisz Siderman Eisenberg, APC experienced unauthorized access to its network on August 23, 2025. The firm engaged third-party forensic specialists and notified federal law enforcement. The incident may have involved first and last names. Complimentary credit monitoring was offered to affected individuals.

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California clockDiscovered Aug 23, 2025 → Notified Mar 4, 2026193d ✗ CA 60-day late28 weeks discovery → filing

Incident timeline

discovery → filing · 28 weeks / 195 days

Aug 23, 2025

Begins

Aug 23, 2025

Discovered

Mar 6, 2026

Filed

vs. sector median

+8 wks slower

This filing is one of 2 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_08b1953e736329d32026-03-04 · +2dVerified

Name: Reisz Siderman Eisenberg, APC
norm: reisz siderman eisenberg apc

Name: Reisz Siderman Eisenberg, APC
norm: reisz siderman eisenberg apc
Industry: Professional Servicesllm

Discovered: Aug 23, 2025
Breach occurred: Aug 23, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 4, 2026
Affected individuals: Not disclosed
Data types: Identity (basic)
Attack vector: Unknown
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified federal law enforcement

During the incident: Took immediate action to secure our network
Launched an internal investigation
Engaged leading, independent cybersecurity specialists to determine the full nature and scope of the incident
Engaged third-party forensic specialists to investigate this matter
Notified federal law enforcement
Arranged for you to activate, at no cost to you, an online credit monitoring service for [Extra2] months provided by Experian
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 28 weeks(195 days from discovery to filing)
Compliance flags: CA 60-day late · 193dCA AG copy ≤15d · 2d
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: Aug 23, 2025
→ Notified: Mar 4, 2026
193d 60 days (analyst band, pre-2026 discoveries) CA 60-day late
California
Consumers notified: Mar 4, 2026
→ AG copy submitted: Mar 6, 2026
2d 15 calendar days CA AG copy ≤15d

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Aug 23, 2025 → Notified: Mar 4, 2026	193d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late
California	Consumers notified: Mar 4, 2026 → AG copy submitted: Mar 6, 2026	2d	15 calendar days	CA AG copy ≤15d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Massachusetts State AGMar 4 · first

California State AG+2d · this page

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/sb24-619795
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 6, 2026
Raw hash: e4da9c4d0cb7a39fa570fecf91ddaefa06e01def9348def7a5e5e0cd2ce7e59c

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityReisz Siderman Eisenberg, APC

Victim entityReisz Siderman Eisenberg, APC

Incidentdiscovered Aug 23, 2025

Stated responseTook immediate action to secure our network

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov