1. NXDOMAIN flood attack
What is a DNS NXDOMAIN Flood DDoS Attack? https://www.netscout.com/what-is-ddos/dns-nxdomain-flood
[TLP:CLEAR, ID#202304071200, Page 1 of 2] U.S. Department of Health and Human Services
Health Sector Cybersecurity Coordination Center (HC3) www.HHS.GOV/HC3
HC3: Sector Alert April 07, 2023 TLP:CLEAR Report: 202304071200
Alert for DNS NXDOMAIN Attacks file:///home/tmaeno/Downloads/dns-nxdomain-attacks-sector-alert.pdf
1.1. Random Subdomain Attacks
Recommendations on Protection Against Random Subdomain Attacks July 2, 2021 | Jie Ji
pseudo-random subdomain (PRSD) attack
DNS権威サーバのクラウドサービス向けに行われた攻撃および対策 / DNS Pseudo-Random Subdomain Attack and mitigations
JANOG51発表資料 https://speakerdeck.com/kazeburo/dns-pseudo-random-subdomain-attack-and-mitigations
https://www.janog.gr.jp/meeting/janog51/dns/