Active Directory is central for many companies and used to authorize access at almost every level. Due to its popularity and importance, AD is a perfect target for ‘bad actors’ A security vulnerability could compromise an entire network infrastructure.Here are some of the best ways to secure Active Directory, as well as improve user experience, referenced in this e-book: Hardening Passwords, MFA, having two accounts, disabling local accounts and monitoring your system for a security breach. The best way to secure AD is to meet NIST guidelines.
Source: https://www.helpnetsecurity.com/2021/07/07/ebook-active-directory-security-tips-from-the-experts/