INSPECTING ARCHIVED INTELLIGENCE (OUTDATED VERSION).

Summit Public Schools Data Breach Exposes 115 GB of Student

| 2026-10-28 17:55 CRITICAL LOW DATA BREACH
Executive Summary
AI-generated
A hacker has leaked 115 GB of Summit Public Schools data containing billions of lines, student and staff personal records on a hacking forum. The leak includes names, home addresses, birth dates, phone numbers, parents details, school records, and approximately 21,000 email addresses from California and Washington schools operated by Summit Public Schools. The attack appears to be a social engineering breach that exploited vulnerabilities in the organization's cloud environment, allowing the hacker to access sensitive information without authentication. As of October 28, 2026, the leaked data remains publicly available on PwnForums, with an estimated total size of 115 GB and containing billions of lines, including personal records, historical school documents, student account fields, and alumni information.
Technical Mitigations AI-generated
• Account Use Policies (ATT&CK mitigation for Social Engineering): Adds verification for helpdesk resets, approvals, and app consents commonly targeted by impersonation. • Audit (ATT&CK mitigation for Social Engineering): Enables correlation of email/identity/SaaS/endpoint activity that appears legitimate. • Reset credentials and API keys that may have been exposed, and review access logs for the affected accounts or integrations.
Technical Observables 4 IoCs Login Required
Indicators of Compromise (IoCs) Protected

Raw threat telemetry, malicious IP addresses, file hashes, and direct VirusTotal correlation are restricted to authenticated users.

files 4
Intelligence Metadata
Actors / Malware / CVEs / Campaigns
ShinyHuntersShinyHunters
Target & Sectors
FIVE_EYES FIVE_EYES educationeducation
Incident Timeline
‎September 2025
ShinyHunters hackers breached the Salesforce environment of Instructure in September 2025 through social engineering.
tactic Social Engineering
threat_actor ShinyHunters
‎May 2026
Canvas experienced a breach in May 2026 involving its Free-for-Teacher environment, which was unrelated to the Summit Public Schools data exposure.
organisation Canvas
organisation Summit
‎October 22, 2026
Threat actors posted approximately 115 GB of stolen student and staff data, including email addresses, on PwnForums.
industry Education
organisation PwnForums
data_breach 15.82 GB
data_breach 8.06 GB
data_breach 115 GB
organisation PowerSchool
data_breach 100 GB
‎October 22
Threat actors posted a PwnForums thread claiming a Summit Public Schools breach and sharing files for download on October 22.
‎2026/10/28
A hacker leaked 115 GB of Summit Public Schools data containing personal records and email addresses.
organisation Khan Academy Lexia Core5 PowerUp
organisation MyLexia Newsela
organisation NWEA
organisation Salesforce
organisation MB
data_breach 35.12 GB
data_breach 13.89 GB
data_breach 46.90 MB
data_breach 92.68 MB
organisation Summit Public Schools Breach
organisation Student and Staff Data
data_breach 115 GB
organisation Summit Public Schools
organisation Names
organisation Hackread.com
Tactical Metrics
Metrics
data_breach
16
Gb
Metrics
data_breach
8
Gb
Metrics
data_breach
35
Gb
Metrics
data_breach
14
Gb
Metrics
data_breach
47
Mb
Metrics
data_breach
93
Mb
Metrics
data_breach
115
Gb
Metrics
data_breach
100
Gb
Intelligence Sources