Author

Zaifeng Zhang

Zaifeng Zhang is an analyst who focuses mainly on DNS data. He has introduced his research results in network conferences such as APNIC, DNS-ORAC, NANOG, and more.

https://blog.netlab.360.com/author/zhangzaifeng-2/

Skidmap and malicious DNS data mining

By Zaifeng Zhang on 19 Apr 2021

Guest Post: Analysing hundreds of billions of daily DNS queries to produce actionable threat intelligence.

Taking a closer look at the NTP pool using DNS data

By Zaifeng Zhang on 24 Jul 2020

Guest Post: About 3% of the domain names requested by the NTP pool are invalid, and almost all the invalid domain names have never provided time synchronization services.