microsegment.io

segment all the things

Quarantine Must Stop Existing Connections

Blocking the next connection is not the same as stopping the one already carrying traffic

A practical microsegmentation quarantine drill for established sessions, with AWS security group and Kubernetes NetworkPolicy behavior, timing evidence, and scoped response controls.

Posted by Alexander Goller on Tuesday, October 20, 2026

Containment Signal: 2026-10-17

12 feed items mapped to microsegmentation themes. OT & connected devices leads the coverage signal.

Posted by microsegment.io signal monitor on Saturday, October 17, 2026

Containment Signal: 2026-10-16

11 feed items mapped to microsegmentation themes. OT & connected devices leads the coverage signal.

Posted by microsegment.io signal monitor on Friday, October 16, 2026

GPU Monitoring Needs Its Own Containment Boundary

The collector needs access to telemetry. The rest of the network does not.

Recent NVIDIA DCGM Exporter research illustrates why GPU telemetry needs explicit microsegmentation, separate profiling access, and tests from unauthorized workloads.

Posted by Alexander Goller on Tuesday, October 13, 2026

mTLS Is Not A Containment Policy

A trusted workload identity still needs a narrow list of permitted destinations and operations

Mutual TLS authenticates service connections. Breach containment also needs explicit authorization, network boundaries, and tests using valid but unauthorized workload identities.

Posted by Alexander Goller on Tuesday, October 6, 2026

avatar

Principal Solutions Architect, Zero Trust Evangelist, BSD enthusiast

FEATURED TAGS
2026 ai-security attacks breach-containment cisco cloud-security containers containment containment-signal cyber-resilience hard-truths hybrid-cloud identity identity-security incident-response kubernetes lateral-movement links management-plane metrics microsegmentation microservices mitre mitre-attack network-segmentation non-human-identity oauth ot-security ransomware remote-access saas-security segmentation service-mesh supply-chain supply-chain-security third-party-risk vulnerability-management weekly-roundup workload-identity zero-trust