One of the cornerstone principles in maintaining a secure Microsoft 365 environment is the segregation of administrative and everyday user accounts. This means categorically avoiding the use of the same accounts for administrative tasks and daily activities, such as browsing the internet or managing emails. Moreover, a key security practice is to ensure that administrative accounts are not equipped with mailboxes to mitigate the risk of phishing attacks. Adhering to these guidelines is not just recommended; it's a critical step towards securing your digital infrastructure. If you haven't segregated your accounts yet, it's imperative to take action without delay.