First of all, you need to assess how secured your environment is by checking your Microsoft Secure Score and taking necessary steps to improve it. You also need to turn on data loss prevention (DLP) and multi-factor authentication (MFA) when you deploy Office 365. We can guide you with the right combination of tools to help you protect your Office 365 environment. Visit this page to learn more.

If you are pressed for time or have limited knowledge or understanding of how Secure Score works, we can help you assess the security weaknesses in your Microsoft Cloud environment and devise a plan to reduce your risks by booking your Secure Score Analysis.

Alternatively, you can check out this blog on how to use Secure Score to improve your security posture.

Source: Microsoft