CK-12 Foundation

CK-12 Foundation notified California AG on Jul 27, 2020 of a data breach, which occurred on Feb 26, 2020. Data exposed: Usernames / passwords, Email address, Postal address.

Organization: CK-12 Foundation
Source: California AG · source record
Date reported: Jul 27, 2020
Date(s) of breach: Wednesday, February 26, 2020
Residents affected: Not published by this source
Data exposed: Usernames / passwords Email address Postal address
Notice letter: Sample notice (PDF)
First seen by BreachTally: 2026-10-30 16:10 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.

Data reproduced from a public government filing. Spot an error? Email support@breachtally.com with the record link. Corrections are applied and noted.