MalwareEducationEducationRansomwareData EncryptedCustomer Data InvolvedIdentity (basic)LowContained

Hacienda La Puente Unified School District

bd_1eb8191232319e3b · schema v1 · pii pii-v1

Severity

Low

Discovered

Apr 12, 2024

Filed

Apr 30, 2025

To disclose

13 months

Affected

Not disclosed

Confidence

65%

Full breach record for Hacienda La Puente Unified School District →2 incidents on file

Hacienda La Puente Unified School District experienced a ransomware attack. Unauthorized access occurred from February 9, 2024, to April 12, 2024. The incident was discovered on April 12, 2024. The district engaged forensic specialists, secured the network, and notified law enforcement. Affected individuals may have had their names and other data exposed. Credit monitoring services were offered.

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California clockDiscovered Apr 12, 2024 → Notified Apr 28, 2025381d ✗ CA 60-day late13 months discovery → filing

Incident timeline

undetected · 63 days

discovery → filing · 13 months / 383 days

Feb 9, 2024

Begins

Apr 12, 2024

Discovered

Apr 30, 2025

Filed

vs. sector median

+46 wks slower

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

Name: Hacienda La Puente Unified School District
norm: hacienda la puente unified school district
Domain: hlpschools.org

Name: Hacienda La Puente Unified School District
norm: hacienda la puente unified school district
Domain: hlpschools.org
Industry: Educationllm

Discovered: Apr 12, 2024
Breach occurred: Feb 9, 2024 – Apr 12, 2024
Undetected for: 63 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 28, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: Reported to federal law enforcementReported to the California Cybersecurity Integration Center

During the incident: Immediately began working with our I.T. team and third-party forensic specialists to secure the network
Restore our systems to operability
Investigate the full scope and nature of the incident
Reported this incident to federal law enforcement
Reported this incident to the California Cybersecurity Integration Center
Engaged third-party forensic specialists to investigate the full scope and nature of this incident
Arranged for credit monitoring services provided by IDX
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 months(383 days from discovery to filing)
Compliance flags: CA 60-day late · 381d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Apr 12, 2024
→ Notified: Apr 28, 2025
381d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Apr 12, 2024 → Notified: Apr 28, 2025	381d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

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://oag.ca.gov/ecrime/databreach/reports/sb24-602092
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 30, 2025
Raw hash: 6e0061811bd8db6d2c95e03406a04ccd4f4ed248f9c4ecb4921cdaa7c6739530

Reporting entityHacienda La Puente Unified School District

Victim entityHacienda La Puente Unified School District

Incidentdiscovered Apr 12, 2024

Stated responseImmediately began working with our I.T. team and third-party forensic specialists to secure the network

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov