Can Intrusive nmap scripts be detected.?

Hello
Just want to know about the unofficial nmap scripts and how do the third parties use them for information gathering.

Do they get detected ?
Are there any less detection or no detection rate nse scripts that could be downloaded and used in nmap to learn more about it.

Hi, I don’t quite get what are you asking? By unofficial scripts, do you mean NSE scripts?
NSE scripts are just used to code and automate various networking tasks that run in parallel. It’s not the scripts that are being detected, and it’s the process you are performing is being detected and stopped. E.g., if you are scanning for sub-domains or scanning for hosts from an IP, then this can be prevented by having an IPS or behavior-based firewall.