Zakir Durumeric - Co-Founder And CEO at zeroRISC

Zakir Durumeric

Co-Founder And CEO at zeroRISC

Palo Alto, California, United States

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Summary

🤩

Rockstar

🎓

Top School

Zakir Durumeric is a computer-security entrepreneur and researcher with 15 years of experience, co-founder and CEO of Censys and an Assistant Professor of Computer Science at Stanford. He builds Internet-scale measurement systems—including key contributions to open-source scanners and libraries like ZMap, ZGrab and ZDNS—to empirically uncover vulnerabilities, attacks, and ecosystem behavior and to drive more resilient defenses and public policy. His work targets protecting people from cybercrime, surveillance, harassment and disinformation, blending hands-on back-end development with academic rigor and production-grade tooling. He serves on the board of zeroRISC and is a DARPA ISAT study group member, reflecting a rare mix of startup execution, open-source engineering, and government-facing advisory impact. He holds a Ph.D. in Computer Science and Engineering from the University of Michigan.

16 years of coding experience

University of Michigan

Github Skills (17)

udp10

tls1210

testing10

c-programming10

tls1310

network-programming10

security10

mtls10

network-scan10

go10

dns10

tcp10

libtls10

packet-analysis10

su10

Programming languages (7)

JavaCRustGoRubyTSQLPython

Github contributions (5)

zmap/zdns

Jul 2016 - Apr 2022

Fast DNS Lookup Library and CLI Tool

Role in this project:

Back-end Developer

Contributions:1 release, 158 reviews, 223 commits in 5 years 10 months

Contributions summary:Zakir primarily worked on implementing and refining core DNS lookup functionalities. They added new modules for specific DNS record types (e.g., CNAME, SOA, SPF, DMARC, NS, AAAA, PTR, MX, and ANY). They also focused on improving the overall structure and efficiency of the lookup process, including introducing a sharded cache and handling TCP connections for better performance. Furthermore, the user addressed issues with error handling and incorporated features such as the ability to specify local addresses.

dns-lookupcorednsdnscliscanner

zmap/zmap

Aug 2013 - Jan 2023

ZMap is a fast single packet network scanner designed for Internet-wide network surveys.

Role in this project:

Back-end Developer

Contributions:2 releases, 162 reviews, 495 commits in 9 years 6 months

Contributions summary:Zakir's commits primarily focus on enhancing the UDP probe module within the ZMap project. Their contributions include fixing issues in the Redis output module and expanding the functionality of the UDP probe module by integrating UDP payload templates. The user also implements a test harness and contributes to the development of core validation and processing logic within the UDP scanning component, demonstrating a focus on improving the scan's capabilities.

network-scannerscanneripv4networkingsurveys

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