HackingRetail & ConsumerRetailData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

Mizuno USA, Inc.

bd_6494cc41816b00c5 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 6, 2024

Filed

Jan 30, 2025

To disclose

12 weeks

Affected

5state residents only

Linked

7 records

Confidence

66%

Full breach record for Mizuno USA, Inc. →2 incidents on file

Mizuno USA, Inc. notified the Maryland Attorney General of a data event affecting 5 Maryland residents. Unauthorized access occurred between August 21 and October 29, 2024, resulting in the copying of files containing names, SSNs, driver's license numbers, passport numbers, and financial account information. Mizuno secured its network, engaged in investigation, and provided 12 months of credit monitoring to affected individuals.

J jump to incidentP pin to compareR raw source

Maryland clock⏱ MD AG >30d12 weeks discovery → filing

Incident timeline

undetected · 77 days

discovery → filing · 12 weeks / 85 days

Aug 21, 2024

Begins

Nov 6, 2024

Discovered

Jan 30, 2025

Filed

vs. sector median

+3 wks slower

This filing is one of 7 records about the same incident.View merged incident

A leak claim by bianlian about this victim was first seen 82 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitebianlianbd_df7df67d1b3e842e2024-11-06 · +85dVerified by operator

Regulatory filings (4) · sorted by filing gap

Indiana State AGbd_0d62948c5d565a312025-01-30Verified
Nebraska State AGbd_56c19f82a3483b122025-01-30Verified
Massachusetts State AGbd_a8af5b6b942bb4102025-01-30Verified by operator
Maine State AGbd_f6af9ad1381940352025-01-30Verified by operator

Press reports (1)

Pressbianlianbd_2d159b99f90c2e4a2024-11-06 · +85dCandidate

Name: Mizuno USA, Inc.
norm: mizuno usa
Domain: mizunousa.com

Name: Mizuno USA, Inc.
norm: mizuno usa
Domain: mizunousa.com
Industry: Retail & Consumerllm

Discovered: Nov 6, 2024
Breach occurred: Aug 21, 2024 – Oct 29, 2024
Undetected for: 77 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jan 30, 2025
Affected individuals: 5state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Regulator citations: Notified Maryland Office of the Attorney General

During the incident: Moved to secure its network
Began an investigation to determine what occurred
Undertook a detailed review of the relevant files
Provided written notice to potentially impacted individuals
Provided access to credit monitoring services for one year through TransUnion
Provided impacted individuals with guidance on how to better protect against identity theft and fraud
Providing written notice of this incident to additional relevant state regulators
Changes made: Working to implement additional safeguards and training to its employees
Evaluating policies, procedures, and technical security measures and implementing additional safeguards as appropriate to further secure the information in our systems
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(85 days from discovery to filing)
Compliance flags: MD AG >30dLeak >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.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Indiana State AGJan 30 · first

Nebraska State AGJan 30 · first

Massachusetts State AGJan 30 · first

Maine State AGJan 30 · first

Maryland State AGJan 30 · first · 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.maryland.gov/resources-info/SBN%20Documents/2025/ITU-376274.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 30, 2025
Raw hash: e2d7e092eaad6f057cc2c9c7e9385e90cd9db88196a96cfe585afe0b1e4681ab

Linked disclosures

Ransomware claims (1)

Regulatory filings (4) · sorted by filing gap

Press reports (1)

Reporting entityMizuno USA, Inc.

Victim entityMizuno USA, Inc.

Incidentdiscovered Nov 6, 2024

Stated responseMoved to secure its network

ComplianceMD AG >30d

Extraction provenanceno artifact recorded

Source provenanceoag.maryland.gov