Boost VM security: 8 key strategies

This guidance article outlines eight essential strategies for securing virtual machines in enterprise environments, addressing risks from VM sprawl, limited visibility, and propagation of vulnerabilities via unvetted golden images. Key recommendations include applying the same security controls to VMs as physical hosts, implementing scalable tooling for rapidly changing VM populations, maintaining and version-controlling hardened golden images, separating and encrypting user data, keeping hypervisors securely configured and patched, enforcing network segmentation, continuously monitoring for drift and vulnerabilities via agents or APIs into SIEMs, and using automation and policy-as-code for remediation and lifecycle management. The piece emphasizes ephemeral/immutable deployments, regular scanning, and integrating VM management into broader security operations to reduce exposure.