MalwareTechnologyManufacturingInformationRansomwareCapture Stored DataData ExfiltratedData EncryptedCustomer Data InvolvedRansom DemandedAuthenticationCredentialsFinancial accountHealth (basic)Identity (basic)Government IDPHIMediumContained

Allied Telesis

bd_091d06d4ec7efd80 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 20, 2024

Filed

Apr 21, 2025

To disclose

48 weeks

Affected · nationwide

783782 in this filing

Linked

8 records

Confidence

71%

Full breach record for Allied Telesis →3 incidents on file

Allied Telesis, Inc. disclosed a ransomware incident affecting Washington residents. Unauthorized access occurred between April 30 and May 20, 2024. Data exposed included names, SSNs, driver's licenses, financial accounts, medical info, and credentials. 782 Washington residents notified on April 21, 2025. Credit monitoring offered.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d48 weeks discovery → filing

Incident timeline

undetected · 20 days

discovery → filing · 48 weeks / 336 days

Apr 30, 2024

Begins

May 20, 2024

Discovered

Apr 21, 2025

Filed

vs. sector median

+37 wks slower

This filing is one of 8 records about the same incident.View merged incident

A leak claim by lockbit_3 about this victim was first seen 329 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitelockbit_3bd_a770fe3a5482493a2024-05-20 · +336dVerified by operator

Regulatory filings (6) · sorted by filing gap

Massachusetts State AGbd_1d1a114061cbea242025-04-21Verified by operator
Indiana State AGbd_2a89022982a55e752025-04-21Verified
New Hampshire State AGbd_7b3779f4b28133e82025-04-21Verified
Maine State AGbd_ab383746d55bfd722025-04-21Verified by operator

Show 2 more filings ↓

California State AGbd_b9813fe41d72dc6d2025-04-21Verified
Vermont State AGbd_db6cbf0ac4696ef32025-04-21Verified by operator

Name: Allied Telesis
norm: allied telesis
Domain: alliedtelesis.com

Name: Allied Telesis
norm: allied telesis
Domain: alliedtelesis.com
Industry: TechnologyllmManufacturingllm

Discovered: May 20, 2024
Breach occurred: Apr 30, 2024 – May 20, 2024
Undetected for: 20 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 21, 2025
Affected individuals: 783state + nationwide
Data types: Identity (basic)Government IDFinancial accountHealth (basic)Credentials
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberDate of birthPassport numberHealth insurance IDMedical informationUsername + password
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified federal law enforcement regarding the eventProviding written notice of this incident to relevant state regulators

During the incident: Promptly began an investigation into the nature and scope of the activity
Launched a thorough review of the impacted files
Notified federal law enforcement regarding the event
Working to implement additional safeguards and training to its employees
Providing access to credit monitoring services for two (2) years through Experian
Providing written notice of this incident to relevant state regulators
Providing written notice... to the three major credit reporting agencies
Changes made: Implement additional safeguards and training to its employees
Implemented additional cybersecurity measures to protect against similar incidents in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 48 weeks(336 days from discovery to filing)
Compliance flags: WA AG >90dLeak >180d
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 · 7 filings · 7 states

View merged incident ↗

Massachusetts State AGApr 21 · first

Indiana State AGApr 21 · first

New Hampshire State AGApr 21 · first

Maine State AGApr 21 · first

California State AGApr 21 · first

Vermont State AGApr 21 · first

Washington State AGApr 21 · 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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA33074.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 21, 2025
Raw hash: e5438d986e2b9264658d67c9eb96648764b312d6bcc5e36e4675737082ebd6ef

Linked disclosures

Ransomware claims (1)

Regulatory filings (6) · sorted by filing gap

Reporting entityAllied Telesis

Victim entityAllied Telesis

Incidentdiscovered May 20, 2024

Stated responsePromptly began an investigation into the nature and scope of the activity

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com