Ensure that Microsoft Defender Recommendation for 'Apply system updates' status is 'Completed'
Why This Matters
Unpatched operating systems expose your virtual machines to known vulnerabilities that attackers can exploit to gain unauthorized access, execute malicious code, or disrupt services. Each missing update represents a gap in your security posture that could lead to data breaches, ransomware infections, or compliance violations. By ensuring system updates are applied, you reduce the attack surface and maintain a consistent security baseline across your Azure environment.
What Aether365 Checks
Aether365 verifies that Microsoft Defender for Cloud's recommendation "Apply system updates" shows a status of "Completed" for your Azure subscription. This check appears in the Aether365 dashboard under Azure Defender for Cloud checks and confirms that all virtual machines have the latest OS patches applied.