There are many different security features that are included in Microsoft Office 365, some are paid extras but there are some free features that you can use now.
Multi-factor authentication:
(MFA), also known as two-step verification. See Turn on multi-factor authentication.
Conditional Access:
If your company or business has complex security requirements or you need more granular control over your security policies, then you should consider using Conditional Access instead of security defaults to achieve a similar or higher security posture.
Conditional Access lets you create and define policies that react to sign-in events and request additional actions before a user is granted access to an application or service. Conditional Access policies can be granular and specific, empowering users to be productive wherever and whenever, but also protecting your organization.
Exchange Online Protection:
Exchange Online Protection (EOP) is the cloud-based filtering service that protects your organization against spam, malware, and other email threats. EOP is included in all Microsoft 365 organizations with Exchange Online mailboxes.
Advanced Threat Protection:
In a nutshell, Windows Defender ATP is a third-party anti-virus compatible cloud-based threat management and protection solution for Windows 10 that does not require the deployment of agents.
Data Loss Prevention:
Data loss prevention is a security solution that identifies and helps prevent unsafe or inappropriate sharing, transfer, or use of sensitive data. It can help your organization monitor and protect sensitive information across on-premises systems, cloud-based locations, and endpoint devices. DLP helps protect your sensitive information with a default policy. This default policy and its recommendation help keep your sensitive content secure by notifying you when email or documents containing a credit card number are shared with someone outside your organization.
Impossible Travel:
This detection identifies two user activities originating from geographically distant locations within a time period shorter than the time it would have taken the user to travel from the first location to the second, indicating that a different user is using the same credentials. So if someone in Germany is trying to access your email after you signed on 2 hours prior, Microsoft will block the sign in.
These are just a few of the advanced Office 365 security features that help lock down your email. For more information or to find out how to implement these features, contact us. We are Microsoft 365 experts and certified partners.