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Data breach · on the rundown Friday, October 16, 2026

California began student notifications after ETS breach affecting millions of students

Covered by 31 outlets over 162 hours. First reported by Politico at 20:58 UTC on October 16, 2026.

+1131 outlets

What happened?

  1. According to TechCrunch, Quest Diagnostics stated via an 8-K filing submitted to the U.S. Securities and Exchange Commission that it discovered a cyberattack targeting Quanum, a system for lab testing relied upon by doctor's offices, hospitals and practices for requesting tests and managing billing.
  2. Quest said the unauthorized access included “certain patient records,” and that it notified law enforcement and is investigating, TechCrunch reported.
  3. Fox Business reported that Quest's systems were temporarily shut down during the incident.
  4. The reports did not state how many individuals were affected in the Quest incident, and described the California student breach only as affecting “millions.”

Quest said it notified law enforcement and is investigating, and Fox Business reported its systems were temporarily shut down.

A machine summary written from the reports listed below; read them for the full account. How summaries are made and what is checked.

Who reported it, and when?

31 distinct reports run by 31 outlets, earliest first (UTC); a syndicated report lists every site that ran it
TimeReportRun by
Oct 16 20:58Report by Politico
  • Politico
Oct 16 23:44Report by New York Post
  • New York Post
Oct 17 01:06Report by The Derrick
  • The Derrick
Oct 17 05:26Millions of California student records breached, some dating back to 2006-Cybernews
  • Cybernews
Oct 17 11:47US-NEWS-CALIF-STUDENTS-DATA-BREACH-FILEPIC-LA - Buffalo News
  • Buffalo News
Oct 17 12:57California student data breach exposes records of millions, including disability status - ET Education
  • ET Education
Oct 18 00:04Report by Sydney Times
  • Sydney Times
Oct 18 09:33Millions of California students hit by data breach - The Daily Star
  • The Daily Star
Oct 18 12:26California Begins Student Notifications After ETS Data Breach - FindArticles
  • FindArticles
Oct 18 15:56California Student Data Breach Exposes 7 Million Records - Hoodline
  • Hoodline
Oct 19 05:09Report by The SOFX Report
  • The SOFX Report
Oct 19 08:52ETS Breach Exposes Data on Millions of CA Students - Technology Org
  • Technology Org
Oct 19 09:34A data breach at ETS exposed information about students. - Digital Watch Observatory
  • Digital Watch Observatory
Oct 19 10:05Report by Hungarian Conservative
  • Hungarian Conservative
Oct 19 15:36Report by Cybersecurity Insiders
  • Cybersecurity Insiders
Oct 19 16:28Report by OCDE Newsroom
  • OCDE Newsroom
Oct 19 17:45Report by shattered.io
  • shattered.io
Oct 19 21:13Testing Company Data Breach Affects Millions of Calif. Students - GovTech
  • GovTech
Oct 19 22:25Report by EdSource
  • EdSource
Oct 19 23:57Student info compromised in California state testing data breach - KCRA
  • KCRA
Oct 20 14:00Security Leaders Share Concerns About California Student Data Breach - Security Magazine
  • Security Magazine
Oct 20 15:00Student Data Breach: California Families Begin Receiving Notices - Sierra News Online
  • Sierra News Online
Oct 20 15:49California state testing data breach may impact millions of students, officials say - CBS News
  • CBS News
Oct 20 19:28Report by The Record from Recorded Future News
  • The Record from Recorded Future News
Oct 20 20:32Report by Action News Now
  • Action News Now
Oct 21 20:48Report by McAfee
  • McAfee
Oct 22 22:13Quest Diagnostics confirms patient information accessed in cyberattack, systems temporarily shut down - Fox Business
  • Fox Business
Oct 22 22:49Report by Daily Journal
  • Daily Journal
Oct 23 06:21California Dept. of Education reports data breach - KESQ
  • KESQ
Oct 23 08:25Quest Diagnostics Reports Cyber Breach Affecting ‘Certain Patient Records’ - SecurityWeek
  • SecurityWeek
Oct 23 15:00Lab testing giant Quest Diagnostics confirms patients’ personal and health data was compromised during breach
  • techcrunch.com

A report's title is shown once our automated legal check has read it and passed it; 14 reports are named by outlet, and the links lead to each report.

Who was named?

More news naming Securities and Exchange Commission

  1. Oct 22 · Cyber Quest Diagnostics disabled lab platform after unauthorized access 3
  2. Oct 22 · Finance SEC approves FINRA rule allowing projected performance, targeted returns 2
  3. Oct 21 · Crypto bitcoinmagazine.com: “Three Companies Have Notified The SEC Of Intention To Start Tokenized Stocks Trading” 2
  4. Oct 20 · Finance Nine listed companies object to inclusion on OKXICE tokenized exchange 2
  5. Oct 19 · Finance Objectors reach 16 as OKX-ICE tokenized stock plan meets pushback 5
  6. Oct 19 · Finance JPMorgan puts JPM Coin deposit token on Ethereum 25
  7. Oct 19 · Crypto Nine issuers object to shares being tokenized on OKX-ICE venue 2
  8. Oct 16 · Finance Law article flags insurance questions in SEC retail-access proposal 2

Sources: the outlets' reports linked on this page; counts and times from GetYourBrief's record of those reports (methodology).