HackingRetail & ConsumerRetailStolen CredentialsSupply Chain (3P Vendor)Customer Data InvolvedIdentity (basic)Government IDMediumContained

JC Penny

bd_be29bc0e22977c54 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Mar 27, 2018

To disclose

—

Affected

2state residents only

Confidence

65%

Full breach record for JC Penny →2 incidents on file

J.C. Penney notified Montana suppliers of a data breach involving a third-party vendor's Microsoft 365 environment. The incident occurred between April and August 2017. Affected data included names, addresses, SSNs, and EINs. J.C. Penney engaged forensic investigators and offered 12 months of credit monitoring.

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Incident timeline

Apr 1, 2017

Begins

Mar 27, 2018

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed2 affectedView incident

Name: JC Penny
norm: jc penny

Name: JC Penny
norm: jc penny
Industry: Retail & Consumerllm

Discovered: —
Breach occurred: Apr 1, 2017 – Aug 31, 2017
Materiality determined: —
Notification sent: —
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain CompromiseT1078 Valid Accounts
Threat actor: Partner
Initial access: trusted_relationship

During the incident: Engaged a data security expert to conduct a forensic investigation
Offered identity protection and credit monitoring services for 12 months
Changes made: Vendor taking steps to secure its systems
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

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://dojmt.gov/wp-content/uploads/JC-Penny.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 27, 2018
Raw hash: 8da4a98d53a4a01550be31bf696978d4ee0ff0d744b458e8da3a5624adfd736b

Reporting entityJC Penny

Victim entityJC Penny

IncidentThird-Party / Supply Chain

Stated responseEngaged a data security expert to conduct a forensic investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov