Information Technology Navigator

Microsoft is introducing a new detection capability in Microsoft Defender for Office 365 to help protect your organization from a growing threat known as email bombing. This form of abuse floods mailboxes with high volumes of email to obscure important messages or overwhelm systems. The new “Mail Bombing” detection will automatically identify and block these attacks, helping security teams maintain visibility into real threats.

Email bombing is a tactic to hide important emails by flooding your inbox with irrelevant ones. For instance, an attacker might order expensive items using your Amazon account and bury the confirmation emails. If you own a domain, they could be trying to transfer it. They may also hide transaction confirmations if they accessed your bank or financial accounts. Ultimately these attacks are designed to distract you, the target, from the “real” email they do not want you to see.

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Microsoft is making changes to their Secure Future Initiative (SFI) and the principle of “Secure by Default.” The updates to Microsoft 365 default settings will strengthen your tenant’s security and meet essential benchmarks. These changes focus on addressing vulnerabilities associated with outdated authentication protocols and app access permissions that could increase risks to organizations.

When this will happen:

These changes will begin rolling out in mid-July 2025 and are expected to be completed by August 2025.

How this affects your organization

The following settings will be updated:

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The Cybersecurity Maturity Model Certification (CMMC) is on track to become a core requirement for defense contractors. However, before CMMC can be included in Department of Defense (DoD) contracts, a key regulation must take effect: Title 48 of the Code of Federal Regulations (48 CFR).

If your organization does business with the DoD—or hopes to—you need to understand this rule and how it will impact your eligibility to win and maintain government contracts.

What Is 48 CFR?

48 CFR is part of the Federal Acquisition Regulation (FAR) System, which governs how the federal government procures goods and services. Within this system, the Defense Federal Acquisition Regulation Supplement (DFARS) adds DoD-specific rules. The 48 CFR rule specifically integrates CMMC 2.0 into the DFARS. In short, this rule establishes cybersecurity requirements as a contractual obligation—not just policy guidance.

How 48 CFR Connects to CMMC 2.0

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One of the most common cyberattack vectors is compromised credentials. Malicious actors with access to AI technologies have increased the sophistication and effectiveness of their attacks. The rise in phishing attacks and malicious actors gaining access to AI technologies has resulted in sharp increases in credential theft. In addition to credential theft, token theft or hijacking is also on the rise. Staying one step ahead of the bad guys is a constant battle for organizations of every size.

Why is This Critical Now? The Deadline is Looming.

In March 2023, Microsoft announced the deprecation of managing authentication methods in the legacy multifactor authentication and self-service password reset (SSPR) policies. Beginning September 30, 2025, authentication methods can't be managed in these legacy MFA and SSPR policies.

Enter Microsoft Entra ID!

Getting Started with Entra ID

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