2026 Notion — EU consumer litigation alleging unlawful AI training use of user content (Reuters)
Data compromised
User-generated workspace content referenced in litigation summaries and press
Technical writeup
Reuters reported European consumer groups sued Notion alleging it processed user workspace content to train AI models without adequate lawful basis, framing privacy and consumer-protection claims rather than a criminal intrusion narrative.
Root cause
Regulatory/litigation dispute over AI training data processing (not a classic threat-actor intrusion)