This open access book constitutes the refereed proceedings of the 13th Annual Privacy Forum on Privacy Technologies and Policy, APF 2025, held in Frankfurt am Main, Germany, during October 22-23, 2025.
The 9 full papers were carefully reviewed and selected from 27 submissions.They were organized into following topical sections: Supporting Laypeople and Users: Design Approaches, User Perceptions, and Problems; Emerging Risks from Upcoming Technologies, Misunderstandings, and Regulatory Derogation; Professional Methods & Tools for Analysis and Decision Making.
.- Supporting Laypeople and Users: Design Approaches, User Perceptions, and Problems.
.- I will never pay for this Perceptions of fairness and factors affecting behaviour on pay-or-ok models.
.- Abort the login : Understanding Phishing Susceptibility through Warning Design in the Context of 2FA.
.- Expert Strategies to Assist Laypeople in Making Decisions and Adopting Privacy-Enhancing Technologies.
.- Emerging Risks from Upcoming Technologies, Misunderstandings, and Regulatory Derogation.
.- Interfacing Human Brains: What could go wrong?.
.- Anonymity-washing.
.- Simple now, Complex later: The Questionable Efficacy of Diluting GDPR Article 30(5).
.- Professional Methods & Tools for Analysis and Decision Making.
.- Turning to Online Forums for Legal Information: A Case Study of GDPR s Legitimate Interests.
.- Illuminating the DPIA Blackbox A Survey of Data Protection Impact Assessment Practices in Organisations.
.- Information Inference Diagrams: Complementing Privacy and Security Analyses Beyond Data Flows.
