GDPR Data Protection Impact Assessment (DPIA) guidance under Article 35 GDPR, EDPB Guidelines WP 248 rev.01, EDPB Opinion 28/2024 (AI), and national SA blacklists/whitelists. Covers threshold assessment, multi-jurisdictional blacklist checks (DE, FR, IE, BE, NL, IT, PL), 5x5 risk scoring, necessity/proportionality analysis, mitigation mapping, Art. 36 prior consultation, AI dual-phase analysis, and audit-ready .docx generation.