HackingEducationEducationData ExfiltratedCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDPIIMediumContained

El Monte Union High School District

bd_7b803ae1628457a8 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Sep 9, 2024

To disclose

—

Affected

Not disclosed

Confidence

69%

Full breach record for El Monte Union High School District →

El Monte Union High School District experienced a network disruption resulting in unauthorized access to systems on or around July 4, 2024. The investigation revealed affected data included names and Social Security Numbers. The district engaged third-party specialists, secured systems, and implemented additional technical safeguards. Notification letters dated September 9, 2024 were sent to affected individuals, who were offered 12 months of complimentary credit monitoring.

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Incident timeline

Jul 4, 2024

Begins

Sep 9, 2024

Filed

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

Name: El Monte Union High School District
norm: el monte union high school district

Name: El Monte Union High School District
norm: el monte union high school district
Industry: Educationllm

Discovered: —
Breach occurred: Jul 4, 2024
Materiality determined: —
Notification sent: Sep 9, 2024
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDPII
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External

During the incident: Immediately took steps to secure our systems
Undertook a thorough investigation
Engaged third-party specialists to assist with understanding the nature and scope of the incident
Began a review of the data to determine the scope of information that was affected and the individuals to whom it pertained
Offering complimentary credit monitoring and identity protection services for a period of twelve (12) months
Changes made: Implemented additional technical safeguards to further enhance the security of information in our possession and to prevent similar incidents from happening in the future
Source: Quoted from the filing itself, not independently verified.

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://oag.ca.gov/ecrime/databreach/reports/sb24-591436
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 9, 2024
Raw hash: 1c85ba7ff3cfaab44d6e385aeaf294d16cfa9598aed5dd4975e7a8c1cb70e5d5

Reporting entityEl Monte Union High School District

Victim entityEl Monte Union High School District

IncidentUnauthorized Access

Stated responseImmediately took steps to secure our systems

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov