This April 2026 issue contains one technical paper and one editorial paper.

The technical paper, When the Lights Go Out: Internet Resilience During the 2025 Iberian Power Outage, by Oliver Hohlfeld, Yasin Alhamwy, Tobias Striffler, Daniel Wagner, and Matthias Wichtlhuber studies the impact of a major power outage in Spain and Portugal on the region’s Internet connectivity. Through an extensive, data-driven analysis, the authors provide insights on how the loss of electricity affects both end-users and core network infrastructure. This study will help inform the design of resiliency strategies to guard against future, similar disruptions.

The second paper, an editorial, An Experience Report on Artifact Evaluation in Brazilian Conferences, by Tiago Heinrich, Diego Kreutz, Roben Lunardi, Rodrigo Mansilha, Vinicius Fulber-Garcia, Lourenco A. Pereira, and Rafael R. Obelheiro describes the process for conducting artifact evaluation at conferences in Brazil. The authors provide insights into the challenges they faced and the solutions they adopted to address them. This editorial will not only help conference organizers facing similar challenges, but also provide more insight to authors
about the evaluation process.

I hope that you will enjoy reading this new issue and welcome comments and suggestions on CCR Online or by email at ccr-editor@sigcomm.org.