AccidentalProfessional ServicesProfessional ServicesMisdeliveryCustomer Data InvolvedIdentity (basic)Government IDFinancialMediumResolved

JSI Research & Training Institute, Inc.

bd_d96088eab536a777 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 5, 2026

Filed

Mar 16, 2026

To disclose

11 days

Affected

Not disclosed

Confidence

66%

JSI Research & Training Institute, Inc. notified Massachusetts residents that their IRS Form 1099 was inadvertently mailed to the wrong party on March 5, 2026. The misdelivered forms exposed names and Social Security numbers. JSI requested the recipient destroy the forms, reviewed internal mailing procedures, and offered 24 months of credit monitoring.

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Massachusetts clock✓ MA AG ≤30d11 days discovery → filing

Incident timeline

discovery → filing · 11 days

Mar 5, 2026

Begins

Mar 5, 2026

Discovered

Mar 16, 2026

Filed

vs. sector median

17 wks faster

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

Name: JSI Research & Training Institute, Inc.
norm: jsi research training institute
Domain: jsiresearch.ca

Name: JSI Research & Training Institute, Inc.
norm: jsi research training institute
Domain: jsiresearch.ca
Industry: Professional Servicesllm

Discovered: Mar 5, 2026
Breach occurred: Mar 5, 2026
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial
Attack vector: Unknown

During the incident: Asked the party that received your 1099 to destroy it
Reiterated the importance of safeguarding personal information with staff
Offering 24 months free credit monitoring and coverage through Allstate Identity Protection
Changes made: Reviewing internal procedures related to the printing and mailing of tax forms to ensure appropriate safeguards are in place
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 11 days(11 days from discovery to filing)
Compliance flags: MA AG ≤30d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

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://www.mass.gov/doc/2026-400-jsi-research-training-institute-inc/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 16, 2026
Raw hash: 57a01f7c90ba474792cfd70ee40d0bda0f830a3d07226d028b9bf40519728e63

Reporting entityJSI Research & Training Institute, Inc.

Victim entityJSI Research & Training Institute, Inc.

Incidentdiscovered Mar 5, 2026

Stated responseAsked the party that received your 1099 to destroy it

ComplianceMA AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov