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What Good L3/L4 Policy Can Actually Do

A 2026 reassessment of MITRE ATT&CK, network segmentation, and practical microsegmentation

MITRE ATT&CK maps network segmentation to dozens of adversary techniques. This article reassesses what disciplined L3/L4 policy and microsegmentation can realistically do, where they help most, and where they stop.

Posted by Alexander Goller on Thursday, July 9, 2026

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Principal Solutions Architect, Zero Trust Evangelist, BSD enthusiast

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2026 ai-security attacks cisco containers containment hard-truths identity kubernetes lateral-movement links management-plane metrics microsegmentation microservices mitre oauth segmentation supply-chain vulnerability-management weekly-roundup zero-trust