Authors

Yevheniya Nosyk

Based in Grenoble, France

3

Articles

67

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About the author

I am a Cybersecurity Researcher at KOR Labs where I analyze all the aspects of the Domain Name System. I am particularly interested in RFC compliance, large-scale Internet measurements, and network security in general. Originally from academia, I enjoy discussing my research with the broader network operators community.

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Website: https://yevheniya.com

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Zeros Are Heroes: NSEC3 Parameter Settings in the Wild

Zeros Are Heroes: NSEC3 Parameter Settings in the Wild

7 min read

Hashed authenticated denial of existence appeared back in 2008 to prevent DNS zone walking. Since then, best practices have changed and were updated in RFC 9276. This article examines how the current landscape of authoritative name servers and resolvers complies with these recommendations.

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SAV: Why Is Source Address Validation Still a Problem?

SAV: Why Is Source Address Validation Still a Problem?

13 min read

Despite being a known vulnerability for at least 25 years, source IP address spoofing remains a popular attack method for redirection, amplification and anonymity. Preventing these attacks requires that operators implement Source Address Validation (SAV) to ensure their networks filter packets with…

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