MalwareEducationEducationRansomwareData EncryptedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountHealth (basic)MediumContained

Sierra Joint Community College District

bd_186fb37bccdc5f82 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 20, 2022

Filed

Nov 11, 2022

To disclose

12 weeks

Affected

Not disclosed

Linked

6 filings

Confidence

65%

Full breach record for Sierra Joint Community College District →2 incidents on file

Sierra Joint Community College District experienced a ransomware attack on August 20, 2022, resulting in the encryption of some systems. The incident potentially exposed personal information including names, addresses, passport numbers, driver's license numbers, Social Security numbers, financial account information, and medical information. The district engaged a third-party forensic firm, secured the network, and offered 12 months of identity monitoring to affected individuals.

J jump to incidentP pin to compareR raw source

California clockDiscovered Aug 20, 2022 → Notified Nov 9, 202281d ✗ CA 60-day late12 weeks discovery → filing

Incident timeline

discovery → filing · 12 weeks / 83 days

Aug 20, 2022

Begins

Aug 20, 2022

Discovered

Nov 11, 2022

Filed

vs. sector median

+5 wks slower

This filing is one of 6 about the same incident.View merged incident

A leak claim by vicesociety about this victim predates this filing by 52 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitevicesocietybd_b715d85a4b900a472022-09-20 · +52dVerified by operator

Regulatory filings (4) · sorted by filing gap

Montana State AGbd_baf9efa918d193bf2022-11-11Verified by operator
Massachusetts State AGbd_ce1ee3ecb0e499112022-11-12 · +1dVerified by operator
New Hampshire State AGbd_fba0b08d3e585bfd2022-11-14 · +3dVerified
California State AGbd_1908b5dabe61a7072023-02-03 · +84dVerified

Name: Sierra Joint Community College District
norm: sierra joint community college district

Name: Sierra Joint Community College District
norm: sierra joint community college district
Industry: Educationllm

Discovered: Aug 20, 2022
Breach occurred: Aug 20, 2022
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 9, 2022
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial accountHealth (basic)
Data elements: Social Security numberMedical information
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: ExternalFinancial

During the incident: Took immediate action to secure our network
Began the restoration process
Initiated an investigation into the cause and scope of the incident
Engaged a professional third-party forensic firm to assist
Changes made: Implemented additional measures to enhance the security of our network environment
Arranged to provide identity monitoring at no cost through IDX
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(83 days from discovery to filing)
Compliance flags: CA 60-day late · 81dLeak >30d
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: Aug 20, 2022
→ Notified: Nov 9, 2022
81d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Aug 20, 2022 → Notified: Nov 9, 2022	81d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 4 states

View merged incident ↗

Montana State AGNov 11 · first

California State AGNov 11 · first · this page

Massachusetts State AG+1d

New Hampshire State AG+3d

California State AG+84d

Pattern: first filing Nov 11 (MT), last Feb 3 (CA) — a 84-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/sb24-559135
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 11, 2022
Raw hash: 71e38ecc3630e13f44cd4cc3463d973ad146906e348ac6e8dd8f171728c04352

Linked disclosures

Ransomware claims (1)

Regulatory filings (4) · sorted by filing gap

Reporting entitySierra Joint Community College District

Victim entitySierra Joint Community College District

Incidentdiscovered Aug 20, 2022

Stated responseTook immediate action to secure our network

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov