kc claffy

  • Principal investigator for the distributed Center for Applied Internet Data Analysis (CAIDA);
  • Senior research scientist at the UC San Diego’s Supercomputer Center (SDSC);
  • Adjunct Professor in UC San Diego’s Computer Science and Engineering Department (CSE).

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Contact Information

kc claffy
aka Kimberly Claffy
Google Scholar


Kimberly C. Claffy ("kc claffy") leads the Center for Applied Internet Data Analysis (CAIDA) in its scientific research and infrastructure activities. CAIDA's research activities focus on independent (third-party) assessments of the security, stability, and resilience of the Internet's underlying infrastructure, including its addressing, routing, and naming systems.

As the Internet infrastructure has matured, these research areas require interdisciplinary effort, including expertise in economics and policy as well as legal and ethical use of data. kc leads CAIDA's infrastructure activities, including software development, and data collection, management, curation, and sharing to support Internet research around the world, with focus on the health and integrity of the global Internet ecosystem.

Recent empirical studies cover the following topics:

  • Internet cartography and performance measurement
  • Analyses of data supporting security of the Internet addressing, routing, and naming (DNS) systems
  • Analyses of operator uptake of best practices supporting Internet routing security

Recent infrastructure projects include:

  • New 100GB monitoring platform to support sharing of traffic data with academic researchers
  • Collaboration with U. Oregon's RouteViews project to expand this platform to support a wider range of scientific research
  • Global Measurement Infrastructure Design project, to support support our design and prototyping of a new highly distributed network measurement platform capable of capturing several types of data relevant to security research, as well as hosting new vetted experiments.

Recent community service:

  • We co-organized the first NSF-sponsored Workshop on Overcoming Measurement Barriers to Internet Research in early 2021, and posted a report that was cited in NSFs new Internet Measurement Research solicitation, the first U.S. government solicitation ever focused on Internet measurement research!

CAIDA's most recent program plan (for 2018-2022) is at https://www.caida.org/home/about/progplan/progplan2018/. Annual reports of CAIDA's activities are at: https://www.caida.org/about/annualreports/.

Last Publications

Paper icon Coarse-grained Inference of BGP Community Intent. T. Krenc, M. Luckie, A. Marder, k. claffy.
ACM Internet Measurement Conference (IMC), Oct 2023.
Paper icon On the Importance of Being an AS: An Approach to Country-Level AS Rankings. B. Huffaker, R. Fontugne, A. Marder, k. claffy.
ACM Internet Measurement Conference (IMC), Oct 2023.
Paper icon Access Denied: Assessing Physical Risks to Internet Access Networks. A. Marder, Z. Zhang, R. Mok, R. Padmanabhan, B. Huffaker, M. Luckie, A. Dainotti, k. claffy, A. Snoeren, A. Schulman.
USENIX Security Symposium, Aug 2023.
Paper icon IRR Hygiene in the RPKI Era. B. Du, G. Akiwate, T. Krenc, C. Testart, A. Marder, B. Huffaker, A. Snoeren, k. claffy.
Passive and Active Measurement Conference (PAM), Mar 2022.
Paper icon Learning to Extract Geographic Information from Internet Router Hostnames. M. Luckie, B. Huffaker, A. Marder, Z. Bischof, M. Fletcher, k. claffy.
ACM SIGCOMM Conference on emerging Networking EXperiments and Technologies (CoNEXT), Dec 2021.

Recent Honors and Awards

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