AccidentalFinancial ServicesFinanceMisdeliveryCustomer Data InvolvedIdentity (basic)Financial accountLowResolved

Citibank N.A.

bd_bb5a65fa71727a8f · schema v1 · pii pii-v1

Severity

Low

Discovered

Mar 27, 2017

Filed

Apr 11, 2017

To disclose

15 days

Affected

3state residents only

Linked

5 filings

Confidence

66%

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

Citibank, N.A. notified the NH Attorney General that a Citi employee accidentally included an external email address when sending legitimate emails to customers. The misdelivered emails contained customer names, addresses, and credit card account numbers for three New Hampshire residents. The incident occurred on March 27, 2017. Citi closed the affected accounts, reissued cards, and offered 12 months of credit monitoring. The unintended recipient deleted the email without opening it.

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Incident timeline

discovery → filing · 15 days

Mar 27, 2017

Begins

Mar 27, 2017

Discovered

Apr 11, 2017

Filed

vs. sector median

7 wks faster

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Montana State AGbd_1700777c7280a0462017-04-11Candidate
Massachusetts State AGbd_178ca65bb5fcf2812017-04-18 · +7dVerified
Massachusetts State AGbd_6dddf4baedcd50172017-04-18 · +7dVerified
Massachusetts State AGbd_4ef0bedccde586232017-04-20 · +9dVerified

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

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

Discovered: Mar 27, 2017
Breach occurred: Mar 27, 2017
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 11, 2017
Affected individuals: 3state-resident count only
Data types: Identity (basic)Financial account
Attack vector: Unknown
Threat actor: Internal
Regulator citations: Notified the New Hampshire Attorney General

During the incident: Closed the Citi customer accounts
Reissued new credit cards
Notified the impacted individuals of this incident
Changes made: Arranged for credit monitoring service at no cost for at least the next 12 months
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 days(15 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 3 states

View merged incident ↗

Montana State AGApr 11 · first

New Hampshire State AGApr 11 · first · this page

Massachusetts State AG+7d

Massachusetts State AG+9d

Pattern: first filing Apr 11 (MT), last Apr 20 (MA) — a 9-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://mm.nh.gov/files/uploads/doj/remote-docs/citibank-20170411.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 11, 2017
Raw hash: d2de84b5a38d048cb76b6345cb0d2da793aa2995932ac4eb7eb4a73533b032d9

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityCitibank N.A.

Victim entityCitibank N.A.

Incidentdiscovered Mar 27, 2017

Stated responseClosed the Citi customer accounts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov