This report assesses the continued relevance of the OECD Recommendation on Cross-Border Co-operation in the Enforcement of Laws Protecting Privacy, originally adopted in 2007. It examines whether the Recommendation has kept pace with the evolving needs of Privacy Enforcement Authorities (PEAs) in light of significant technological and legal changes over the past 15 years. While the principles underlying the Recommendation are seen to remain solid, the report highlights several gaps and challenges for cross-border enforcement co-operation. It concludes that the OECD could either provide additional guidance to support the implementation of the Recommendation or consider revising it to better address current challenges.