NYDFS Final Cybersecurity Rules – MFA, Asset Inventory, and Third-Party Risk By Noah Gillespie, Lisa M. Lanham ‡, Jena M. Valdetero, Michael A. Berlin & Eileen M. Hayes on November 11, 2025 The last remaining provisions of the amendments to the New York Department of Financial Services’ (DFS) cybersecurity regulation called Part 500 came into effect Nov. 1, 2025. Continue reading the full GT Alert.