HackingFinancial ServicesFinanceVulnerability ExploitZero-DayData ExfiltratedCustomer Data InvolvedSupply Chain (Dependency)Identity (basic)Government IDFinancial accountMediumContained

City National Bank of Florida

bd_e4a5de2e9c6485cf · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 3, 2023

Filed

Jul 31, 2023

To disclose

8 weeks

Affected

18state residents only

Linked

8 filings

Confidence

66%

Full breach record for City National Bank of Florida →2 incidents on file

City National Bank of Florida (CNBF) issued a supplemental notice regarding a MOVEit Transfer zero-day vulnerability incident. Unauthorized access occurred May 29-30, 2023. CNBF discovered the incident on June 3, 2023. Data exposed included names, DOB, SSNs, and bank account numbers. CNBF notified 18 New Hampshire residents and offered credit monitoring. The filing is a follow-up to an initial June 30, 2023 notification.

J jump to incidentP pin to compareR raw source

Leak gap clock✗ Leak >180d8 weeks discovery → filing

Incident timeline

undetected · 5 days

discovery → filing · 8 weeks / 58 days

May 29, 2023

Begins

Jun 3, 2023

Discovered

Jul 31, 2023

Filed

vs. sector median

1 wks faster

This filing is one of 8 about the same incident.View merged incident

A leak claim by dispossessor about this victim predates this filing by 604 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitecl0pbd_570679dab11b45562023-06-30 · +31dCandidate

Regulatory filings (6) · sorted by filing gap

Maine State AGbd_29d5c53f10db83532023-08-07 · +7dVerified by operator
Vermont State AGbd_2df23e82ac6e9a132023-06-30 · +31dVerified by operator
Massachusetts State AGbd_321c225b4f4158992023-06-30 · +31dVerified by operator
Indiana State AGbd_3ccbdecad6096e662023-06-30 · +31dVerified by operator

Show 2 more filings ↓up to 31d gap

Maine State AGbd_5af843f65474ab402023-06-30 · +31dVerified by operator
Montana State AGbd_d2a7f8ef8dac6e442023-06-30 · +31dVerified by operator

Name: City National Bank of Florida
norm: city national bank of florida
Domain: citynational.com

Name: City National Bank of Florida
norm: city national bank of florida
Domain: citynational.com
Industry: Financial Servicesllm

Discovered: Jun 3, 2023
Breach occurred: May 29, 2023 – May 30, 2023
Undetected for: 5 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 30, 2023
Affected individuals: 18state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified federal law enforcement authoritiesNotified federal regulators
Initial access: exploit_public_facing

During the incident: Engaged third-party cybersecurity and forensics experts to assist in remediation and investigative efforts
Notified law enforcement
Notified federal regulators
Took the application offline
Applied available patches issued by Progress Software
Implemented additional security measures to monitor and detect suspicious account activity
Offered identity theft protection services through IDX, A ZeroFox Company
Mailed notification letters to affected individuals
Notified the three major Credit Reporting Agencies
Changes made: Applied available patches issued by Progress Software to fix the vulnerability
Implemented additional security measures to increase ability to monitor and detect suspicious account activity
Offering to change account numbers upon request
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(58 days from discovery to filing)
Compliance flags: Leak >180d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 6 states

View merged incident ↗

Vermont State AGJun 30 · first

Massachusetts State AGJun 30 · first

Indiana State AGJun 30 · first

Maine State AGJun 30 · first

Montana State AGJun 30 · first

New Hampshire State AG+31d · this page

Maine State AG+38d

Pattern: first filing Jun 30 (VT), last Aug 7 (ME) — a 38-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/city-national-bank-of-florida-20230731.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 31, 2023
Raw hash: ba257c1c8e5e73d17ad5643da3bed391792745db4b1db9a8fd4897d12a06d885

Linked disclosures

Ransomware claims (1)

Regulatory filings (6) · sorted by filing gap

Reporting entityCity National Bank of Florida

Victim entityCity National Bank of Florida

Incidentdiscovered Jun 3, 2023

Stated responseEngaged third-party cybersecurity and forensics experts to assist in remediation and investigative efforts

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov