New Podcast Uncovers Portugal's Post-Revolution Intelligence Rebirth After 1974

A new podcast titled SIS: 40 Years of Secrets explores the early years of Portugal's intelligence services, starting with the turbulent decade after the Carnation Revolution. The series examines how the country rebuilt its security structures following the collapse of the authoritarian regime in 1974.

On April 25, 1974, the Carnation Revolution toppled Portugal's dictatorship and dismantled its secret police. The Direção-Geral de Segurança (DGS), successor to the feared PIDE, was immediately dissolved by the military junta. By May 1, Decree-Law No. 173/74 formally disbanded the DGS, arrested its leaders, and restructured its remnants into the Polícia de Vigilância e Defesa do Estado (PVDE). Eventually, its functions shifted to civilian forces like the PSP and GNR.

In the aftermath, intelligence operations fell under military control. However, the armed forces lacked the resources and expertise to manage the new security challenges. Political instability and lingering distrust of the old regime further delayed the creation of a civilian intelligence agency. It wasn't until 1986 that Portugal established its modern Security and Intelligence Service (SIS). The podcast's first episodes focus on the critical decade between 1974 and 1984, detailing the service's formation, training methods, and oversight during its early years.

The podcast provides rare insight into a pivotal period in Portugal's intelligence history. From the dissolution of the DGS to the eventual founding of the SIS, the series traces how the country moved from military-run security to a structured civilian system. Official records and interviews with former operatives help piece together this previously classified chapter.