HackingOtherTargetedIdentity (basic)LowContained

The Chicago Zoological Society

bd_bbdec5fec2d533dc · schema v1 · pii pii-v1

Severity

Low

Discovered

Jan 16, 2024

Filed

Jul 19, 2024

To disclose

26 weeks

Affected

5state residents only

Linked

6 filings

Confidence

66%

Full breach record for The Chicago Zoological Society →

Chicago Zoological Society d/b/a Brookfield Zoo Chicago notified individuals of unauthorized network access discovered on January 16, 2024. The incident may have exposed names and other personal information. The organization engaged third-party forensic specialists, notified law enforcement, and is offering 24 months of credit monitoring. No evidence of identity theft was found at the time of notice.

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Leak gap clock⏱ Leak >90d26 weeks discovery → filing

Incident timeline

discovery → filing · 26 weeks / 185 days

Jan 16, 2024

Begins

Jan 16, 2024

Discovered

Jul 19, 2024

Filed

vs. sector median

+18 wks slower

This filing is one of 6 about the same incident.View merged incident

A leak claim by hunters_international about this victim predates this filing by 152 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitehunters_internationalbd_e2f2d29e69a847052024-02-17 · +153dVerified by operator

Regulatory filings (4) · sorted by filing gap

Massachusetts State AGbd_33ed2ecc8aac322c2024-07-19Verified
New Hampshire State AGbd_834f48c99478c31a2024-07-19Verified
Indiana State AGbd_f9aba21f4f5210212024-07-19Verified
Illinois State AGbd_6906df9b2b9d94502024-07-01 · +18dCandidate

Name: The Chicago Zoological Society
norm: the chicago zoological society
Domain: czs.org

Name: The Chicago Zoological Society
norm: the chicago zoological society
Domain: czs.org
Also named: Chicago Zoological Societydba oflegal entity
Brookfield Zoo Chicagodba oftrade name
Industry: Otherllm

Discovered: Jan 16, 2024
Breach occurred: Jan 16, 2024
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 19, 2024
Affected individuals: 5state-resident count only
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: notify local and federal law enforcement

During the incident: Took steps necessary to secure our network
Launched an investigation into the nature and the scope of the event with the assistance of third-party cyber specialists
Worked with third-party review specialists to undertake a comprehensive review of the files
Notify local and federal law enforcement
Offering complimentary credit monitoring and identity restoration services for twenty-four (24) months through Experian
Changes made: Evaluating additional technical security measures
Existing policies and procedures to mitigate reoccurrence of this type of event
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 26 weeks(185 days from discovery to filing)
Compliance flags: Leak >90d
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 · 5 filings · 5 states

View merged incident ↗

Illinois State AGJul 1 · first

Massachusetts State AG+18d

New Hampshire State AG+18d

Indiana State AG+18d

Montana State AG+18d · this page

Pattern: first filing Jul 1 (IL), last Jul 19 (MT) — a 18-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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-1560.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 19, 2024
Raw hash: e7d58dd327ed4b673ef25d7679936e98cf2182799367f9d0af2263e6f31811d5

Linked disclosures

Ransomware claims (1)

Regulatory filings (4) · sorted by filing gap

Reporting entityThe Chicago Zoological Society

Victim entityThe Chicago Zoological Society

Incidentdiscovered Jan 16, 2024

Stated responseTook steps necessary to secure our network

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancedojmt.gov