MalwareRetail & ConsumerRetailRansomwareData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDFinancial accountHighActive

KING ARTHUR BAKING COMPANY, INC.

bd_544017763c3e2349 · schema v1 · pii pii-v1

Severity

High

Discovered

Jun 29, 2023

Filed

Aug 9, 2024

To disclose

14 months

Affected

1,274state residents only

Linked

4 filings

Confidence

69%

Full breach record for KING ARTHUR BAKING COMPANY, INC. →2 incidents on file

King Arthur Baking Company, Inc. disclosed a ransomware incident affecting 1,274 Washington residents. Unauthorized access occurred between June 23-29, 2023. Data exposed included names, SSNs, DOBs, and financial account info. Notices began July 20, 2023. Investigation ongoing.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d14 months discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 6 days

discovery → filing · 14 months / 407 days

Jun 23, 2023

Begins

Jun 29, 2023

Discovered

Aug 9, 2024

Filed

vs. sector median

+51 wks slower

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

New Hampshire State AGbd_47381b7ede5eaa782024-08-09Verified
Maine State AGbd_52bb50fb161493172024-08-09Candidate
Vermont State AGbd_5cb0d845660ee5002024-08-09Verified

Name: KING ARTHUR BAKING COMPANY, INC.
norm: king arthur baking

Name: KING ARTHUR BAKING COMPANY, INC.
norm: king arthur baking
Industry: Retail & Consumerllm

Discovered: Jun 29, 2023
Breach occurred: Jun 23, 2023 – Jun 29, 2023
Undetected for: 6 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 20, 2023
Affected individuals: 1,274state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: NameSocial Security numberFinancial account numberDate of birth
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 ImpactT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: notified federal law enforcementproviding written notice of this incident to relevant state regulators

During the incident: KAB immediately launched an investigation
KAB notified federal law enforcement regarding the event
KAB notified the three major credit reporting agencies, Equifax, Experian, and TransUnion
Providing access to credit monitoring services for two (2) years through Experian IdentityWorks
Changes made: Working to implement additional safeguards and training to its employees
Reviewed our policies and procedures, and processes related to the storage of personal information to reduce the likelihood of a similar future event
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 14 months(407 days from discovery to filing)
Compliance flags: WA AG >90d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

New Hampshire State AGAug 9 · first

Maine State AGAug 9 · first

Vermont State AGAug 9 · first

Washington State AGAug 9 · 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/BreachA30150.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 9, 2024
Raw hash: d3b1ba82054bfc890bd01b0fbd259afd707d7a138f515ce59be7689b3e1fb5d7

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityKING ARTHUR BAKING COMPANY, INC.

Victim entityKING ARTHUR BAKING COMPANY, INC.

Incidentdiscovered Jun 29, 2023

Stated responseKAB immediately launched an investigation

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com