PhysicalEducationEducationTheftEmployee Data InvolvedIdentity (basic)Government IDEmploymentMediumContained

Mount Diablo Unified School District

bd_f0885b613aebc86d · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 1, 2012

Filed

Dec 12, 2012

To disclose

11 days

Affected

Not disclosed

Linked

3 filings

Confidence

66%

Full breach record for Mount Diablo Unified School District →5 incidents on file

Mt. Diablo Unified School District reported the theft of a password-protected, unencrypted computer from a burglarized office on December 1, 2012. The device contained Excel and Word files with names, dates of birth, addresses, and Social Security numbers of employees and former employees working between 1998 and 2010. The District offered one year of credit monitoring and implemented measures to reduce SSN usage.

J jump to incidentP pin to compareR raw source

Incident timeline

discovery → filing · 11 days

Dec 1, 2012

Begins

Dec 1, 2012

Discovered

Dec 12, 2012

Filed

vs. sector median

7 wks faster

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Massachusetts State AGbd_2ac81a7458b3eebf2012-12-18 · +6dVerified
New Hampshire State AGbd_3eeccc30239adb562012-12-18 · +6dVerified

Name: Mount Diablo Unified School District
norm: mount diablo unified school district

Name: Mount Diablo Unified School District
norm: mount diablo unified school district
Industry: Educationllm

Discovered: Dec 1, 2012
Breach occurred: Dec 1, 2012 – Dec 1, 2012
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDEmployment
Data elements: Social Security numberDate of birth
Attack vector: Unknown
MITRE ATT&CK: T1052 Exfiltration Over Physical Medium
Threat actor: External

During the incident: Working diligently with law enforcement
Offering a free one-year membership in ProtectMyID Elite from ConsumerInfo.com, Inc. an Experian company to provide you with credit monitoring capabilities and in-depth assistance in identity theft protection
Changes made: Implemented several measures to minimize the use of employee social security numbers in District reports and forms, other than when legally required
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 11 days(11 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

California State AGDec 12 · first · this page

Massachusetts State AG+6d

New Hampshire State AG+6d

Pattern: first filing Dec 12 (CA), last Dec 18 (NH) — a 6-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/sb24-37238
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 12, 2012
Raw hash: 9c790009df4065a2292a6298740d5e76e43915e9a6f43982fe5929c712c0ee59

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityMount Diablo Unified School District

Victim entityMount Diablo Unified School District

Incidentdiscovered Dec 1, 2012

Stated responseWorking diligently with law enforcement

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov