MisuseFinancial ServicesFinancePrivilege AbuseEmployee Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

Citibank N.A.

bd_18475cdc3ab6957c · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Mar 1, 2024

To disclose

—

Affected

1state residents only

Confidence

66%

Full breach record for Citibank N.A. →51 incidents on file

Citibank, N.A. notified affected individuals of an insider security incident where an employee improperly accessed systems between Sept 7, 2023 and Jan 2, 2024. Compromised data included names, SSNs, DOBs, and credit card details. The employee was placed on leave, cards were reissued, and credit monitoring was offered.

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Incident timeline

Sep 7, 2023

Begins

Mar 1, 2024

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident

Name: Citibank N.A.
norm: citibank na
Domain: citi.com

Name: Citibank N.A.
norm: citibank na
Domain: citi.com
Industry: Financial Servicesllm

Discovered: —
Breach occurred: Sep 7, 2023 – Jan 2, 2024
Materiality determined: —
Notification sent: Feb 27, 2024
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security numberDate of birth
Attack vector: Insider
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: Internal
Initial access: insider_action

During the incident: Initiated an investigation
Employee placed on leave
Employee no longer has access to Citi’s systems
Credit card cancelled and new account number issued
Arranged for enrollment in Experian IdentityWorks at no cost for up to 12 months
Changes made: Ongoing measures to protect account and personal information
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/OCP/Consumer-notification-letter-1153.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 1, 2024
Raw hash: 83801d57b577c563fae01e320ab78b4108e43a3616fa50aba7cb7069f6555b90

Reporting entityCitibank N.A.

Victim entityCitibank N.A.

IncidentInsider

Stated responseInitiated an investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov