Microsoft 365 is an important part of how many businesses communicate, collaborate, and manage their work. But simply having Microsoft 365 does not mean your business is fully protected.
The security of your Microsoft 365 environment depends heavily on how accounts, devices, permissions, and data are configured. A few overlooked settings can create unnecessary security risks.
Here are five Microsoft 365 security areas every business should review regularly.
1. Multi-Factor Authentication
Passwords alone are not enough to protect business accounts.
Multi-factor authentication (MFA) adds another verification step when someone signs in. Even if an employee’s password is stolen, MFA can make it much harder for an attacker to access the account.
Businesses should review whether MFA is enabled for all users, especially employees with access to sensitive information and administrator accounts.
It is also important to make sure employees understand how to respond to unexpected MFA requests. Approving a login they did not initiate can still put an account at risk.
2. Administrator Accounts and Permissions
Not every employee needs administrative access.
Administrator accounts have powerful permissions, which means a compromised administrator account can create significant security problems.
Review who has administrative privileges and remove unnecessary access. Employees should generally have only the permissions they need to perform their jobs.
It is also a good practice to separate everyday work from administrative activity rather than using a highly privileged account for routine tasks.
Regular permission reviews can help prevent old or unnecessary access from remaining in place.
3. External Sharing and File Permissions
Microsoft 365 makes it easy to share documents and collaborate with people outside the organization. However, overly broad sharing permissions can expose business information.
Review how employees share files through services such as OneDrive and SharePoint.
Ask:
- Who can access sensitive files?
- Can external users access company documents?
- Are shared links restricted appropriately?
- Are old external users still able to access files?
- Are confidential documents protected with appropriate permissions?
Sharing should be convenient, but it should also be controlled.
4. Email Security Settings
Email remains one of the most common ways attackers target businesses.
Microsoft 365 includes security capabilities that can help identify phishing, malicious links, suspicious attachments, and other threats. Businesses should review their email security configuration to make sure appropriate protections are enabled and monitored.
It is also important to review suspicious messages and security alerts instead of assuming Microsoft 365 will catch everything automatically.
Employee awareness remains an important part of email security. Even with strong technical controls, employees should know how to identify and report suspicious messages.
5. User and Device Access
Your Microsoft 365 environment should account for how and where employees access company information.
Review which devices are allowed to connect to business accounts and whether company devices have appropriate security controls.
Businesses should also have a clear process for:
- New employee accounts
- Employee departures
- Lost or stolen devices
- Personal device access
- Remote employees
- Inactive accounts
When an employee leaves the company, their account and access should be reviewed and disabled promptly. Leaving old accounts active can create unnecessary security risks.
Don’t Set It and Forget It
Microsoft 365 security is not something businesses should configure once and never review again.
Employees change roles, people leave the organization, new applications are added, and business requirements change. A setting that made sense a year ago may no longer be appropriate today.
Schedule regular reviews of your Microsoft 365 security configuration. Focus on account security, permissions, file sharing, email protection, and device access.
A Stronger Microsoft 365 Environment Starts with the Basics
You do not always need complicated technology to improve Microsoft 365 security. Making sure fundamental security settings are properly configured can go a long way toward reducing unnecessary risk.
Businesses should regularly review MFA, administrator permissions, external sharing, email security, and user/device access. These areas can help identify weaknesses before they become bigger problems.
Need Help Securing Your Microsoft 365 Environment?
I.T. For Less can help businesses review and manage their Microsoft 365 environment, strengthen security controls, manage user access, and monitor for potential issues.
From Microsoft 365 management and cybersecurity to proactive IT support, device protection, monitoring, and backup, we can help you build a more secure and reliable technology environment.
Contact I.T. For Less to review your Microsoft 365 security and identify areas that may need attention.