MalwareRetail & ConsumerRetailRansomwareData EncryptedCustomer Data InvolvedEmployee Data InvolvedMulti-Stage ChainIdentity (basic)Government IDFinancial accountHighActive

KING ARTHUR BAKING COMPANY, INC.

bd_52bb50fb16149317 · schema v1 · pii pii-v1

Severity

High

Discovered

Jun 29, 2023

Filed

Aug 9, 2024

To disclose

14 months

Affected · nationwide

3,05315 in this filing

Linked

4 filings

Confidence

65%

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

King Arthur Baking Company, Inc. reported a cybersecurity incident where an unauthorized actor gained access to systems storing personal information between June 23 and June 29, 2023. The network was infected with malware. Affected data included names, SSNs, and financial account numbers for approximately 3,053 individuals. The company notified law enforcement and offered 24 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Jun 29, 2023 → Filed with AG Aug 9, 2024407d ✗ ME AG >90d14 months discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

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
Washington State AGbd_544017763c3e23492024-08-09Verified
Vermont State AGbd_5cb0d845660ee5002024-08-09Verified

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

Name: KING ARTHUR BAKING COMPANY, INC.
norm: king arthur baking
Domain: kingarthurbaking.com
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: 3,053state + nationwide
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: notified federal law enforcement regarding the eventproviding written notice of this incident to relevant state regulators

During the incident: KAB moved quickly to investigate and respond to the incident
Assess the security of KAB systems
Identify potentially affected individuals
Notified federal law enforcement regarding the event
Providing access to credit monitoring services for two (2) years, through Experian
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Providing written notice of this incident to relevant state regulators
Notified the three major credit reporting agencies, Equifax, Experian, and TransUnion
Changes made: Working to implement additional safeguards and training to its employees
Reviewing our policies, procedures and processes related to the storage and access 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: ME AG >90d · 407d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Jun 29, 2023
→ Filed with AG: Aug 9, 2024
407d 90 days ME AG >90d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jun 29, 2023 → Filed with AG: Aug 9, 2024	407d	90 days	ME AG >90d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

New Hampshire State AGAug 9 · first

Washington State AGAug 9 · first

Vermont State AGAug 9 · first

Maine 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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/7bcab51e-6885-4cf0-b735-66d3b41610ce.html
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: 39544db2a4467476a662fdae993863d1080ca05bd0a5a361defd4bda65b79e91

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 moved quickly to investigate and respond to the incident

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov