California warns all public school students of data stolen in contractor breach The CDE released multiple statements over the last week warning the state’s students that assessment contractor Educational Testing Service (ETS) suffered a months-long data breach. Educational Testing Service školství US tg: incident tp: únik dat tp: dodavatelský řetězec 20. 10. 2026 21:20 · The Record · California warns all public school students of data stolen in contractor breach