In the first years of its existence it was known primarily as Ha-Haganah Leumit' (The National Defense), and also by names such as Haganah Bet ("Second Defense"), Irgun Bet ("Second Irgun"), the Parallel Organization and the Rightwing Organization.
Nos primeiros anos de existencia era coñecida principalmente como "ההגנה הלאומית" (Haganá Nacional) e tamén por nomes como "Irgun Bet", "Haganá Bet" e a "Organización paralela".