Measures to restore biosecurity to a group of organisms that are or may be exposed to biological threats or infectious diseases are referred to as biodefense. Biodefense is a military or emergency response phrase that is usually addressed in the context of biowar or bioterrorism. Biodefense refers to the use of medical interventions to protect humans from bioterrorism, such as medications and immunizations, as well as research and public health preparedness to defend against such attacks. In order to prevent the use of harmful diseases and poisons, bioscience laboratories, agricultural managers, customs agents, and other parties have implemented a variety of processes and methods. Biodefense has two unique target populations: non-combatant civilians and combatants in the military (troops in the field). Water and food supply protection are frequently important aspects of biodefense. Medical methods are used in biodefense to safeguard individuals from bioterrorism. Medicines and immunizations are included in this category. Medical research and plans to guard against bioterrorist threats are also included.