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The fastest attackers don’t “hack” like they used to, they drift through systems, blend into normal behavior, and move at machine speed. That reality forces a hard question: if you cannot defend the perimeter anymore, what should a modern security architecture look like?
We sit down with James Karimi, CIO and CISO of GTT Communications, one of the world’s largest tier one internet operators, to break down the practical moves behind a containment-first strategy. We talk candidly about the human layer of risk, why awareness training still matters, and why GTT chose a draconian but effective approach: eliminating lateral movement so a compromise stays small. James also shares what it really takes to “unflatten” applications with firewall contexts, explicit network rules, and the painful discovery work most teams underestimate.
From there, we zoom into the GTT Envision platform and how software-based service chaining at the edge improves resiliency, agility, and managed security. Then we get into AI governance and operations: how GTT built AI factories with Dell and NVIDIA, why documenting data is the make-or-break step for enterprise AI, and how they designed secure AI operators that are isolated by default. We also explore behavior-based detection and response, CVE analysis with mitigation guidance, real-time topology for threat hunting, and where autonomous mitigation fits depending on a customer’s tolerance.
If you care about zero trust, microsegmentation, AI observability, network detection and response, SOC modernization, and measurable AI ROI, this conversation gives you a blueprint you can adapt. Subscribe, share this with a security leader, and leave a review with the one change you think every enterprise should make next.
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