MalwareEducationEducationRansomwareData EncryptedCustomer Data InvolvedDelayed DiscoveryIdentity (basic)PIILowContained

Hacienda La Puente Unified School District

bd_08d378f872532da3 · schema v1 · pii pii-v1

Severity

Low

Discovered

Apr 12, 2024

Filed

Jul 3, 2025

To disclose

15 months

Affected

Not disclosed

Linked

7 filings

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, when the incident was discovered. The district engaged forensic specialists and notified law enforcement. Affected individuals may have had their names and other personal information exposed. Credit monitoring services were offered.

J jump to incidentP pin to compareR raw source

California clockDiscovered Apr 12, 2024 → Notified Jul 2, 2025446d ✗ CA 60-day late15 months discovery → filing

Incident timeline

undetected · 63 days

discovery → filing · 15 months / 447 days

Feb 9, 2024

Begins

Apr 12, 2024

Discovered

Jul 3, 2025

Filed

vs. sector median

+55 wks slower

This filing is one of 7 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (6) · sorted by filing gap

Indiana State AGbd_a23ed27bd81cbd0a2025-07-03Verified
Massachusetts State AGbd_d6b08be6254c72d52025-07-04 · +1dVerified
Nebraska State AGbd_87470dac93757c552025-08-15 · +43dVerified
Vermont State AGbd_dc6c623cdafb506c2025-08-29 · +57dVerified

Show 2 more filings ↓up to 76d gap

New Hampshire State AGbd_1d319057400a676a2025-09-02 · +61dVerified
California State AGbd_40af77a4100bceab2025-09-17 · +76dVerified

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: Jul 2, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)PII
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: Reported this incident to federal law enforcement and the California Cybersecurity Integration Center

During the incident: Engaged third-party forensic specialists to investigate the full scope and nature of this incident
Reported this incident to federal law enforcement and the California Cybersecurity Integration Center
Arranged for credit monitoring services for 12/24 months provided by IDX
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 months(447 days from discovery to filing)
Compliance flags: CA 60-day late · 446d
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: Jul 2, 2025
446d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Apr 12, 2024 → Notified: Jul 2, 2025	446d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 6 states

View merged incident ↗

Indiana State AGJul 3 · first

California State AGJul 3 · first · this page

Massachusetts State AG+1d

Nebraska State AG+43d

Vermont State AG+57d

New Hampshire State AG+61d

California State AG+76d

Pattern: first filing Jul 3 (IN), last Sep 17 (CA) — a 76-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://oag.ca.gov/ecrime/databreach/reports/sb24-605025
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 3, 2025
Raw hash: 1b839395894656e20570fc807149d3c27ce15e1013d8490c50ac928db3f3db6a

Linked disclosures

Regulatory filings (6) · sorted by filing gap

Reporting entityHacienda La Puente Unified School District

Victim entityHacienda La Puente Unified School District

Incidentdiscovered Apr 12, 2024

Stated responseEngaged third-party forensic specialists to investigate the full scope and nature of this incident

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov