Social EngineeringGovernmentGovernmentPhishingStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)PIILowContained

City of Independence, Missouri

bd_7dec05d975aabe9d · schema v1 · pii pii-v1

Severity

Low

Discovered

Dec 4, 2020

Filed

Jul 16, 2021

To disclose

32 weeks

Affected

2state residents only

Confidence

64%

Full breach record for City of Independence, Missouri →

The City of Independence, Missouri, notified individuals of a cyberattack discovered on December 4, 2020. Unauthorized access to employee email accounts occurred between September 7 and December 1, 2020. Personal information, including names, was potentially accessed. The City reset passwords, cooperated with federal law enforcement, and offered 12 months of credit monitoring.

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Incident timeline

undetected · 88 days

discovery → filing · 32 weeks / 224 days

Sep 7, 2020

Begins

Dec 4, 2020

Discovered

Jul 16, 2021

Filed

vs. sector median

+21 wks slower

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

Name: City of Independence, Missouri
norm: city of independence missouri

Name: City of Independence, Missouri
norm: city of independence missouri
Industry: Governmentllm

Discovered: Dec 4, 2020
Breach occurred: Sep 7, 2020 – Dec 1, 2020
Undetected for: 88 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 16, 2021
Affected individuals: 2state-resident count only
Data types: Identity (basic)PII
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: notified and cooperated with federal law enforcement
Initial access: phishing_link

During the incident: Resetting relevant account passwords
Reviewing the contents of the potentially accessed files and folders
Reviewing internal systems to identify contact information
Notified and cooperated with federal law enforcement
Offering you access to complimentary credit monitoring and identity protection services for 12 months through Experian
Changes made: Reviewing and enhancing existing policies and procedures to reduce the likelihood of a similar future event
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 32 weeks(224 days from discovery to filing)
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/a-notif-91.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 16, 2021
Raw hash: c16e83c9ba2b2f38e917b68c7a28390d595d0343197664cb4292806efc73d18c

Reporting entityCity of Independence, Missouri

Victim entityCity of Independence, Missouri

Incidentdiscovered Dec 4, 2020

Stated responseResetting relevant account passwords

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov