Telecom operators face rapidly escalating cyber risks driven by 5G expansion, cloud-native networks, and massive device connectivity. While Security Operations Centers (SOCs) can detect threats, they lack contextual awareness of network topology, service chains, resource dependencies, and real customer impact. At the same time, Network Operations Centers (NOCs) and SOCs remain siloed, leading to slow threat triage, manual investigations, limited automation, and an inability to support autonomous operations. These challenges are further intensified by regulatory requirements such as NIS2 and DORA, which demand continuous visibility, risk analysis, and operational resilience. The Cyber Twin: Cyber-aware Ontology for AIOps Catalyst introduces a semantic, cyber-aware Digital Twin that provides contextual intelligence across network, service, and security domains. By embedding cyber knowledge into a unified ontology, the Cyber Twin autonomously discovers assets, understands service dependencies, correlates cyber events with network and customer impact, and enables AI-driven reasoning and decision-making. This cyber-aware Digital Twin transforms traditional NOC and SOC operations into a unified, autonomous model capable of closed-loop, context-aware responses. It supports AIOps-ready workflows that improve operational efficiency, enable faster and more accurate threat mitigation, and significantly reduce mean time to repair (MTTR) for network and service degradations, including those caused by security incidents. Ultimately, the Catalyst accelerates operators’ journey toward cyber-resilient autonomous networks while ensuring service continuity, customer trust, and regulatory compliance.