Knowledge Research Center data breaches ยท Privacy Unpacked https://privacyunpacked.com/breaches/company/knowledge-research-center/feed.xml 2026-09-02T00:00:00Z Privacy Unpacked Knowledge Research Center data breach (United States) https://privacyunpacked.com/breaches/company/knowledge-research-center/#knowledgeresearchcenter-2026-09-02 2026-09-02T00:00:00Z Knowledge Research Center (United States) notified the California Attorney General of a data breach on 2 September 2026. The breach began on 8 July 2026, 56 days before it was reported.