Substack updated its privacy policy on May 15, 2026 to disclose that it shares account identifiers with child safety industry consortia and now receives information from those consortia to detect child sexual abuse material (CSAM). The policy also added language stating that Substack may obtain additional information from third parties, combine it with platform data, and use the combined information to provide safer experiences and improve the platform and analytics.
The updated policy discloses that Substack shares account identifiers with child safety industry consortia and receives information from those consortia to detect CSAM. The policy now also states that Substack may obtain additional information from third parties and combine it with platform data to provide safer experiences and improve platform analytics. The updated terms treat combined information from other sources in accordance with the overall privacy policy. These are disclosures of existing or new data-handling practices rather than changes that grant users new control mechanisms.
Policy now states Substack shares account identifiers with and receives information from child safety industry consortia to detect CSAM.
Policy adds that Substack may obtain information from third parties, combine it with platform data, and use combined information for safety and analytics purposes.
This change record describes what was added, removed, or modified in the document. Analysis reflects what the updated agreement states or permits. It does not constitute a legal determination about enforceability. Applicability may vary by jurisdiction. Methodology
Substack disclosed two changes to its data-handling practices on May 15, 2026: bidirectional data sharing with child safety consortia for CSAM detection, and third-party data integration for safety and analytics purposes. The CSAM disclosure aligns …
Regulatory exposure, obligation change, escalation trigger, board-ready language, and recommended action for legal and compliance teams.
Unlock the full institutional analysis — InsightConductAtlas provides verified policy intelligence sourced directly from platform documents. All analysis is intended to support, not replace, legal and compliance review. Record CA-C-002116.
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