https://www.crowdstrike.com/en-us/blog/open-source-active-reconnaissance-red-team/
Open Source Active Reconnaissance (Red Team)
Having visibility into an attacker's reconnaissance activities enables organizations to better protect themselves from a breach. Learn more here!
open sourceactive reconnaissancered team
https://tryhackme.com/resources/blog/active-passive-reconnaissance-techniques
TryHackMe | Active and Passive Reconnaissance Techniques
An explanation of active and passive reconnaissance techniques, tools, and the training TryHackMe offers to get you started!
activepassivereconnaissancetechniques