First, in the Vulkan affair in April 1953, 44 suspects were arrested and charged with spying on behalf of East Germany (GDR), but were later released as the information provided by the BfV was insufficient to obtain court verdicts.
Pertama, dalam permasalahan Vulkan pada bulan April 1953, 44 tersangka ditangkap dan dikenai tuduhan mata-mata atas nama Jerman Timur (RDJ), namun kemudian dibebaskan karena informasi yang diberikan oleh BfV tidak memadai untuk mendapatkan vonis pengadilan.