MalwareEducationEducationRansomwareStolen CredentialsData EncryptedMulti-Stage ChainIdentity (basic)Government IDMediumContained

Hacienda La Puente Unified School District

bd_dc6c623cdafb506c · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 12, 2024

Filed

Aug 29, 2025

To disclose

17 months

Affected

Not disclosed

Linked

7 filings

Confidence

66%

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

Hacienda La Puente Unified School District experienced a ransomware attack between Feb 9 and Apr 12, 2024. Unauthorized access occurred, potentially exposing names and government IDs. The district engaged forensic specialists, secured the network, and reported to federal law enforcement and the California Cybersecurity Integration Center. Affected individuals were notified in August 2025 and offered credit monitoring.

J jump to incidentP pin to compareR raw source

Vermont clock✗ VT AG >45 bday17 months discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 63 days

discovery → filing · 17 months / 504 days

Feb 9, 2024

Begins

Apr 12, 2024

Discovered

Aug 29, 2025

Filed

vs. sector median

+63 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

New Hampshire State AGbd_1d319057400a676a2025-09-02 · +4dVerified
Nebraska State AGbd_87470dac93757c552025-08-15 · +14dVerified
California State AGbd_40af77a4100bceab2025-09-17 · +19dVerified
Massachusetts State AGbd_d6b08be6254c72d52025-07-04 · +56dVerified

Show 2 more filings ↓up to 57d gap

California State AGbd_08d378f872532da32025-07-03 · +57dCandidate
Indiana State AGbd_a23ed27bd81cbd0a2025-07-03 · +57dVerified

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: Aug 15, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Reported the incident to federal law enforcementReported the incident to the California Cybersecurity Integration Center
Initial access: valid_credentials

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

Time to disclose: 17 months(504 days from discovery to filing)
Compliance flags: VT AG >45 bday
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 6 states

View merged incident ↗

California State AGJul 3 · first

Indiana State AGJul 3 · first

Massachusetts State AG+1d

Nebraska State AG+43d

Vermont State AG+57d · this page

New Hampshire State AG+61d

California State AG+76d

Pattern: first filing Jul 3 (CA), 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://ago.vermont.gov/document/2025-08-29-hacienda-la-puente-unified-school-district-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 29, 2025
Raw hash: 4d5b35f9d6dc9c189fd37ddf4f0f3fdbf4cd742f6ca7af59a412e85bc06c8848

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

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov