Sociedad Española de Radiodifusión

Sociedad Española de Radiodifusión, operating as Cadena SER, is a Spanish radio broadcasting organization headquartered in Spain. The entity functions as a national radio network, maintaining transmission capabilities from a central facility to disseminate audio content. Its operational structure includes an IT services subsidiary, indicating a diversified support infrastructure for its core broadcasting activities. The organization serves the Spanish market, fulfilling a role in the country's media landscape through its radio services. While its specific audience size or market share is not detailed, its identification as a network implies a multi-station or widespread broadcast reach across the nation. The existence of a dedicated IT subsidiary suggests an internalized approach to technological management, a common trait among established media conglomerates.

The organization's operational resilience was severely tested by a significant cybersecurity incident on November 4, 2019. A ransomware attack, identified by researchers as a BitPaymer variant associated with the Dridex cybercrime group, directly targeted Sociedad Española de Radiodifusión and its IT services subsidiary. This assault precipitated widespread network shutdowns and profound operational disruptions. In response, the radio network implemented precautionary disconnections of its own operating systems across local station infrastructure, though it maintained national broadcasts from its central facility using isolated systems. The incident induced a state of internal operational paralysis, with technicians engaged in urgent mitigation efforts. The attack's methodology, exploiting a service provider to infiltrate client networks, triggered precautionary disconnections by other organizations, including a major airport operator, due to perceived supply chain vulnerabilities. Sociedad Española de Radiodifusión collaborated with national cybersecurity authorities throughout the incident to systematically restore affected local infrastructure, highlighting the event's severity and its classification as a critical infrastructure disruption within the media sector.