While in prison, Vanunu took part in small acts of non-submission, such as refusing psychiatric treatment, refusing to talk with the guards, reading only English-language newspapers, and watching only BBC television.
Sementara di penjara, Vanunu mengatakan, ia ikut serta dalam suatu pemberontakan kecil, seperti misalnya menolak berbicara kepada para penjaga, hanya membaca koran-koran berbahasa Inggris, dan hanya menonton TV BBC.