MisuseEducationEducationData MishandlingEmployee Data InvolvedCustomer Data InvolvedIdentity (basic)CredentialsEducationLowResolved

San Dieguito Union High School District

bd_61a5af2570b7bae6 · schema v1 · pii pii-v1

Severity

Low

Discovered

Apr 12, 2021

Filed

Jun 11, 2021

To disclose

9 weeks

Affected

Not disclosed

Confidence

66%

Full breach record for San Dieguito Union High School District →4 incidents on file

San Dieguito Union High School District disclosed that a former student sent a mass email to the student body containing an attachment with student names, directory information, and email account usernames and passwords. The incident was discovered on April 12, 2021. The district launched an internal investigation, notified students to change credentials, and implemented additional security safeguards. No Social Security numbers were exposed.

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Incident timeline

discovery → filing · 9 weeks / 60 days

Apr 12, 2021

Begins

Apr 12, 2021

Discovered

Jun 11, 2021

Filed

vs. sector median

+2 wks slower

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

Name: San Dieguito Union High School District
norm: san dieguito union high school district
Domain: sduhsd.net

Name: San Dieguito Union High School District
norm: san dieguito union high school district
Domain: sduhsd.net
Industry: Educationllm

Discovered: Apr 12, 2021
Breach occurred: Apr 12, 2021
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Identity (basic)CredentialsEducation
Attack vector: Insider
Threat actor: Internal
Regulator citations: Notified regulatory authorities, as required by law
Initial access: insider_action

During the incident: Launched an internal investigation to determine the nature and scope of the activity
Notified students to change their email account credentials
Notified regulatory authorities, as required by law
Changes made: Reviewed existing policies and procedures
Implemented additional safeguards to further secure the information in our systems
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(60 days from discovery to filing)
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/sb24-541810
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 11, 2021
Raw hash: 6876aa9f3409a96ddd1b28fab1c8e861b50aa26a1bcb1ce1ed6ecf7ffa7bb2d1

Reporting entitySan Dieguito Union High School District

Victim entitySan Dieguito Union High School District

Incidentdiscovered Apr 12, 2021

Stated responseLaunched an internal investigation to determine the nature and scope of the activity

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov