Verisign Labs

Talented, Collaborative and Dedicated

The Verisign Labs team brings a tremendous breadth of expertise and talent.

Casey Deccio

Casey Deccio

Senior Research Scientist


B.S., Computer Science, Brigham Young University, Provo, UT
M.S., Computer Science, Brigham Young University, Provo, UT
Ph.D., Computer Science, UC Davis, Davis CA


Casey Deccio is a Senior Research Scientist at Verisign Labs. His interests include protocol analysis and improvement and tool development, with the objective of increasing stability, security, and safety of the Internet. Among his research and development focuses are DNSSEC deployment enhancements, DNS ecosystem tools/monitoring, and the measurement, modeling, and analysis of deployed Internet protocols, including DNS/DNSSEC and IPv6.

Previously, Casey was a Principal Research and Development Cyber Security Staff member at Sandia National Laboratories, where he had been employed since 2004, and where he was responsible for network-related research and development, including DNSSEC and IPv6 deployment efforts. At Sandia he developed DNSViz, the widely used Web-based tool for DNS analysis and visualization. Casey also served as an ICANN Research Fellow supporting the Security and Stability Advisory Committee (SSAC) in 2013.

Casey earned B.S. and M.S. degrees in Computer Science from Brigham Young University, in 2002 and 2004, respectively, and received a Ph.D. from UC Davis in 2010, also in Computer Science. His dissertation was a study of dependencies in the DNS, which form a model for quantifying and improving DNS availability through careful deployment practices.

Outside of work, Casey enjoys making music and participating in recreational activities with his wife and four children.


Conference Publications

Quantifying and Improving DNSSEC Availability (with J. Sedayao, K. Kant, and P. Mohapatra). In 20th International Conference on Computer Communication Networks (ICCCN 2011). Maui, HI. Jul. 31 - Aug. 4, 2011.

Measuring Availability in the Domain Name System (with J. Sedayao, K. Kant, and P. Mohapatra). In INFOCOM '10, The 29th IEEE International Conference on Computer Communications. San Diego, CA. Mar. 14 - 19, 2010.

Quality of Name Resolution in the Domain Name System (with C-C. Chen, J. Sedayao, K. Kant, and P. Mohapatra). In ICNP '09, The 17th IEEE International Conference on Network Protocols. Princeton, NJ. Oct. 13 - 16, 2009.

A Study of the Suitability of IrOBEX for High-speed Exchange of Large Data Objects (with J. Ekstrom, D. R. Partridge, K. Tew, and C. Knutson). In Global Telecommunications Conference, 2003. GLOBECOM '03. Dec. 1 - 5, 2003.

Journal Articles

Maintenance, Mishaps and Mending in Deployments of the Domain Name System Security Extensions (DNSSEC). In International Journal of Critical Infrastructure Protection 5 (2012). Jul. 2, 2012. pp. 98 - 103.

Quantifying DNS Namespace Influence (with J. Sedayao, K. Kant, and P. Mohapatra). In Computer Networks, Volume 56, Issue 2, Feb. 2012. pp. 780 - 794.

Books/Book Chapters

"Security and Robustness in the Internet Infrastructure" (with K. Kant). In Handbook on Securing Cyber-Physical Critical Infrastructure. Morgan Kaufman (2012), Waltham, MA. pp. 705-733.

Quantifying and Improving DNS Availability. PhD Dissertation. University of California Davis, 2010.


"DNSViz - Monitoring, Analysis, and Visualization". DNS-OARC Fall 2013 Workshop, Oct. 5, 2013.

"Qualitative DNS Measurement Perspectives". NANOG 59, DNS Track, Jun. 5, 2013.

"Solutions and Challenges in Securing the Domain Name System". University of Nevada, Dept. of Computer Science & Engineering, Apr. 19, 2013.

"Profiling Internet Spammers Using Passive Dual-stack Observation". AIMS-5, Feb. 7, 2013.

"Qualitative DNS Measurement Perspectives". TIP 2013, Jan. 19, 2013.

"Qualitative DNS Measurement Perspectives". ISC/CAIDA Data Collaboration Workshop, Oct. 22, 2012.

"Turning Down the Lights: Darknet Deployment Lessons Learned". DUST 2012, May 14, 2012.

"Deploying IPv6 in the Enterprise". ARIN XXIX, Apr. 23, 2012.

"Assessing and Improving the Quality of DNSSEC Deployment". AIMS-4, Feb. 9, 2012.

"Facilitating Global DNSSEC Deployment". NANOG 54, DNS Track, Feb. 7, 2012.

"From 0 to 6 in...”: IPv6 deployment experiences at Sandia National Laboratories". Winter 2012 ESCC/Internet2 Joint Techs, Jan 23, 2012.

"Maintenance, Mishap, and Mending in DNSSEC Deployment". DNS EASY 2011, Oct. 18, 2011.

"A Case for Comprehensive DNSSEC Monitoring and Analysis Tools". SATIN 2011, Apr. 4, 2011.

"Modeling DNS Security: Misconfiguration, Availability, and Visualization". CERIAS Security Seminar, Purdue University, Mar. 2, 2011.

"Quantifying the Impact of DNSSEC Misconfiguration". NANOG 51, Feb. 1, 2011.

"DNSViz: A DNS Visualization Tool". 2010 DNS-OARC Workshop, Oct. 14, 2010.

"Quantifying the Impact of DNSSEC Misconfiguration". 2010 DNS-OARC Workshop, Oct. 14, 2010.

"Modeling DNS Security: Misconfiguration, Availability, and Visualization". BYU Computer Science Dept. Colloquium, Sep. 9, 2010.

"Troubleshooting DNSSEC Visually". Summer 2010 ESCC/Internet2 Joint Techs, Jul. 14, 2010.

"DNSSEC Visualization". NANOG 49, Jun. 15, 2010.

"Visual DNSSEC Troubleshooting with DNSViz". RIPE 60, May 6, 2010.