Passive and Active Measurement

This book constitutes the proceedings of the 20th InternationalConference on Passive and Active Measurement, PAM 2019, held in Puerto Varas, Chile, in March 2019. The 20 full papers presented were carefully reviewed andselected from 75 submissions. The papers cover a wide range of importantnetworking measurement and analysis topics from low layers of the network stackup to applications, using measurements at scales large and small, andcoveringimportant aspects of the network ecosystem such as routing, DNS, privacy, security, and performance.They areorganized in the following topical sections: mobile networks; measurement at Internet scale; measuremen at other scales; domain names; failures; security and privacy; and Web.