This case study examines the deployment of Intrusion Shield OnPremise within a small defense contractor’s network over a three-month period to enhance cybersecurity through autonomous, inline, reputation-based enforcement. The deployment aimed to strengthen security while minimizing operational disruption and administrative effort. Results revealed significant levels of churn among domains, hostnames, IP addresses, and outbound server infrastructure, highlighting the dynamic nature of modern network communications. Shield OnPremise helped reduce exposure to untrusted and potentially malicious infrastructure by automatically enforcing security policies and blocking risky connections before they became security incidents. The solution improved visibility into network activity, enabled proact

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