HackingEducationEducationCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDMediumContained

Delano Joint Union High School District

bd_00e7c8c436a5298b · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 7, 2021

Filed

May 3, 2023

To disclose

18 months

Affected

Not disclosed

Confidence

64%

Full breach record for Delano Joint Union High School District →2 incidents on file

Delano Union School District detected unusual activity on November 7, 2021. An investigation determined that an unknown actor may have accessed or acquired files containing names and Social Security numbers. The district engaged cybersecurity experts, secured the environment, and notified the FBI. Affected individuals were offered complimentary identity protection services.

J jump to incidentP pin to compareR raw source

California clockDiscovered Nov 7, 2021 → Notified May 3, 2023542d ✗ CA 60-day late18 months discovery → filing

Incident timeline

discovery → filing · 18 months / 542 days

Nov 7, 2021

Begins

Nov 7, 2021

Discovered

May 3, 2023

Filed

vs. sector median

+69 wks slower

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

Name: Delano Joint Union High School District
norm: delano joint union high school district
Domain: djuhsd.org

Name: Delano Joint Union High School District
norm: delano joint union high school district
Domain: djuhsd.org
Industry: Educationllm

Discovered: Nov 7, 2021
Breach occurred: Nov 7, 2021
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 3, 2023
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Attack vector: Unknown
Threat actor: External
Regulator citations: Provided notification to the Federal Bureau of Investigation

During the incident: Took immediate steps to secure our environment
Launched an internal investigation
Engaged cybersecurity experts to secure the environment and conduct an investigation
Engaged a vendor to review the contents of the relevant files likely to contain sensitive data
Undertook a review of the potentially affected information
Worked diligently to identify current address information required to effectuate notification
Provided notification to the Federal Bureau of Investigation
Changes made: Implemented additional security measures to further harden its network environment
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 18 months(542 days from discovery to filing)
Compliance flags: CA 60-day late · 542d
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: Nov 7, 2021
→ Notified: May 3, 2023
542d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Nov 7, 2021 → Notified: May 3, 2023	542d	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/sb24-566308
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 3, 2023
Raw hash: 72752d8f199412ad993e36cd9fb5f4e3aa1ff5fce7257ca03414d25eefcef3a1

Reporting entityDelano Joint Union High School District

Victim entityDelano Joint Union High School District

Incidentdiscovered Nov 7, 2021

Stated responseTook immediate steps to secure our environment

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov