Basic Authentication is the use of a simple user name and password to authenticate with a service, such Exchange Online.

Microsoft has an update for Office 365/Microsoft 365 Exchange Online Basic Auth retirement in the case of SMTP.

Microsoft on Wednesday announced another update on its plans to end the use of Basic Authentication with the Exchange Online e-mail messaging service.

If you've implemented multi-factor authentication, you should disable the default basic authentication to make sure attackers can't exploit it.

A new capability that allows IT pros to disable 'basic authentication' when using the Exchange Online service is now available as a public preview, though there are a few caveats.

Microsoft calls on customers to enable multi-factor authentication as it blocks billions of phishing email and password attacks.