A telecom is a communications provider that carries voice, data, and messaging traffic across mobile, fixed-line, and internet networks. Telecom operators keep core services online for customers, businesses, and emergency communications, so they sit at a critical point in the digital supply chain.
In cyber security, telecoms are high-value targets because an attack can affect both service availability and sensitive customer data. Threats may include network disruption, credential theft, SIM swap abuse, interception of messages, ransomware, or distributed denial-of-service attacks. Defenses focus on strong identity controls, network segmentation, redundancy, traffic monitoring, and rapid incident response. Because telecom outages can quickly ripple into other organizations, resilience and recovery planning are as important as perimeter security.