UnknownProfessional ServicesProfessional ServicesCustomer Data InvolvedIdentity (basic)Low

Reisz Siderman Eisenberg, APC

bd_08b1953e736329d3 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Mar 4, 2026

To disclose

—

Affected

Not disclosed

Linked

2 filings

Confidence

66%

Full breach record for Reisz Siderman Eisenberg, APC →

Reisz Siderman Eisenberg, APC notified Massachusetts residents of a data incident potentially impacting names and other personal information. The firm is reviewing policies and offering 24 months of credit monitoring. No specific breach cause, dates, or counts were disclosed in the notice.

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Incident timeline — partial

? — ?

Breach window unknown

Mar 4, 2026

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

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

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

California State AGbd_440d4c338042ca392026-03-06 · +2dCandidate

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

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

Discovered: —
Materiality determined: —
Notification sent: Mar 4, 2026
Affected individuals: Not disclosed
Data types: Identity (basic)
Attack vector: Unknown

During the incident: Reviewing our policies and procedures
Providing you access to 24 months of credit monitoring and identity protection services at no cost to you
Changes made: Reviewing our policies and procedures
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Massachusetts State AGMar 4 · first · this page

California State AG+2d

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://www.mass.gov/doc/2026-324-reisz-siderman-eisenberg-apc/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 4, 2026
Raw hash: d3f97522b12b1c9a31b30b26825459db6b28b086a52e9620479311901ed179c0

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityReisz Siderman Eisenberg, APC

Victim entityReisz Siderman Eisenberg, APC

IncidentUnknown

Stated responseReviewing our policies and procedures

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov