3 Major Microsoft Security enhancements every organisation should be aware of

Microsoft continues to strengthen its security ecosystem with foundational changes across Windows, Defender for Endpoint, and Entra ID. These updates are designed to improve resilience, modernise threat prevention, and close long‑standing identity‑security gaps. Here’s a breakdown of what’s new and why it matters.

1. The Windows Resiliency Initiative: A Safer, More Stable Operating System

Microsoft has launched the Windows Resiliency Initiative (WRI)—a strategic redesign of how security software runs on Windows devices. At the core of this shift is one major architectural change:
third‑party security tools are being moved out of the Windows kernel and into user mode.

Why does that matter?

When third‑party endpoint protection tools run in the kernel, a faulty update can bring down the entire operating system—something the world saw firsthand during the global CrowdStrike outage in 2024, which caused millions of devices to crash. Microsoft’s new approach aims to prevent such catastrophic failures by isolating this code to a safer environment without reducing security visibility. 

This initiative is being developed with major security vendors—including ESET, SentinelOne, Trellix, Trend Micro, WithSecure, Sophos, Bitdefender, and CrowdStrike—who are already testing or preparing solutions that run outside the kernel. Private previews for partners have begun, with early capabilities rolling out as part of Microsoft’s long‑term resilience roadmap.

What this means for organisations:

• Reduced risk of system‑wide outages
• More stable Windows environments
• Security tools that continue to deliver protection without touching the most sensitive OS components

2. AI‑Powered Predictive Shielding in Microsoft Defender for Endpoint

Defender for Endpoint is evolving again—this time with the introduction of Predictive Shielding, an AI‑driven capability designed to anticipate attacks and block them before they execute.

Predictive Shielding builds on Microsoft’s Automatic Attack Disruption engine, extending it from reactive containment into proactive prevention. Instead of waiting for an attacker to act, the system uses real‑time telemetry, attacker behaviour patterns, and historical incident data to predict likely next steps and harden vulnerable paths in advance.

One particularly important improvement:
The system can automatically block risky GPO changes and prevent attackers from using Safe Mode to disable security controls, a known tactic used to bypass endpoint protections.

Key benefits for security teams:

• Earlier defence during the reconnaissance phase of an attack
• “Just‑in‑time” protections that reduce operational disruption
• AI‑assisted hardening of devices, credentials, and access paths

Ultimately, Predictive Shielding transforms Defender from a detection‑and‑response tool into a prevention‑focused protection layer.

3. Conditional Access for Account Recovery in Microsoft Entra

Microsoft Entra is closing a long‑standing identity‑security gap with new Conditional Access (CA) support for Account Recovery.

Previously, if users lost all authentication methods (e.g., lost phone, reset device), the recovery process relied heavily on helpdesks and lacked enforceable security controls. The new update allows admins to apply CA policies directly to the account recovery flow, targeting the specific action urn:user:accountrecovery.

This ensures organisations can enforce requirements such as:

• Device compliance
• Geographic restrictions
• Verified ID checks
• Other CA conditions before allowing users to proceed with recovery

Microsoft has confirmed that this feature is in preview with full rollout expected in May 2026, giving IT teams the ability to lock down one of the most socially‑engineered entry points into an organisation: the MFA reset process.

Why it matters:

• Eliminates a potential backdoor for attackers
• Adds strong governance to identity recovery
• Reduces reliance on helpdesks while increasing security assurance

Final Thoughts

These three updates demonstrate Microsoft’s strategic move toward a more resilient and predictive security ecosystem:

• Windows Resiliency Initiative strengthens OS architecture against catastrophic failures.
• Predictive Shielding uses AI to move Defender from reactive to anticipatory protection.
• Entra Conditional Access for Account Recovery secures a critical identity workflow long targeted by attackers.

For organisations across Ireland, the UK, and beyond, these enhancements mean greater stability, stronger protection, and fewer operational disruptions—empowering IT and security teams to stay ahead in an increasingly complex threat landscape.

If you’d like support adopting these new capabilities across your Windows, Defender, or Entra environments, Codec’s security team is here to help.