Sikich Applies CISA Best Practices to Businesses

In today’s ever-evolving digital landscape, cybersecurity should be a top priority for every organization. The Cybersecurity and Infrastructure Security Agency (CISA), a trusted authority in the realm of cybersecurity, has released comprehensive recommendations to secure Microsoft Defender for Office 365 and Exchange Online. In this blog, we will summarize these vital guidelines and explain how Sikich can help you implement these cybersecurity best practices seamlessly, bolstering your organization’s defense mechanisms.

CISA best practices

Key CISA Recommendations for Defender for Office 365 and Exchange Online

Account & Identity Management

  1. Multi-Factor Authentication (MFA): Use more than one verification method to confirm the users’ identity.
  2. Least Privilege Access: Limit user permissions strictly to what’s needed for their roles.
  3. Regular Auditing: Continuously review and audit administrative accounts.

Data Protection

  1. Data Loss Prevention Policies: Prevent accidental or malicious data sharing.
  2. Encryption: Secure your data both in-transit and at-rest.

Monitoring and Reporting

  1. Activity Logs: Activate comprehensive logging and send these logs to a centralized service.
  2. Regular Audits: Frequently review configurations and settings to ensure compliance.

Endpoint Protection

  1. Up-to-date Antivirus: Maintain the latest antivirus solutions on all endpoints.
  2. Patch Management: Regularly update all system patches.

Email Security

  1. Anti-Phishing Policies: Implement anti-phishing solutions to protect against deceptive emails.
  2. Mail Flow Rules: Flag suspicious emails from external sources mimicking internal communications.

Backup and Recovery

  1. Regular Backups: Maintain routine backups of all critical data.
  2. Test Recovery Procedures: Make sure your backups can be restored successfully.

General Configurations

  1. Safe Attachments and Links: Utilize features to scan and block harmful attachments and links.
  2. Zero Trust Architecture: Follow the principle of ‘never trust, always verify’ across your organization.

Why Choose Sikich to Implement CISA Guidelines?


Our team of certified experts is well-versed in the complexities of Defender for Office 365 and Exchange Online. We understand CISA recommendations inside and out, offering you unparalleled expertise in securing your digital assets.

Comprehensive Service

We provide an all-in-one solution for implementing CISA’s guidelines. From setting up Multi-Factor Authentication to configuring complex Mail Flow Rules, our services cover every aspect of cybersecurity.

Custom Solutions

No two businesses are the same, and we appreciate that. We offer tailored solutions designed to meet the unique needs of your organization.


Cybersecurity is not a luxury; it’s a necessity. Implementing CISA’s recommendations for Defender for Office 365 and Exchange Online is an excellent way to safeguard your business against a myriad of digital threats. Sikich is committed to helping you implement these guidelines effectively, offering you peace of mind in this interconnected world.

Ready to secure your business? Contact us today to learn more about our comprehensive cybersecurity services.

This publication contains general information only and Sikich is not, by means of this publication, rendering accounting, business, financial, investment, legal, tax, or any other professional advice or services. This publication is not a substitute for such professional advice or services, nor should you use it as a basis for any decision, action or omission that may affect you or your business. Before making any decision, taking any action or omitting an action that may affect you or your business, you should consult a qualified professional advisor. In addition, this publication may contain certain content generated by an artificial intelligence (AI) language model. You acknowledge that Sikich shall not be responsible for any loss sustained by you or any person who relies on this publication.

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