Yes, Nmap even plays a role in supporting IR efforts when a vulnerability has been exploited.Â
When a vulnerability is present, it creates an opportunity for attackers. If an attacker exploits that vulnerability, the IR team must:
Identify what systems are affected
Determine what services were exposed
Confirm whether exploitation is ongoing
Contain or shut down the vulnerable service
Apply patches and verify recovery
Identify open ports that should NOT be exposed
Detect outdated or high-risk service versions using -sV
Spot unauthorized services added by attackers
Discover new hosts or ports that appear after a compromise
Identify command-and-control (C&C) services opened by malware
Ensure vulnerable services have been stopped and shut down
Confirm firewall rules and ACL changes are working as expected
Ensure vulnerable software versions have been patched/updated
Compare before/after scans to confirm correct configurations
Check that only the expected ports are available again
Ensure everything is operational as expected