One of the following toxalbumin is used as terrorist weapon
Ricin obtained from Ricinus communis: most poisonous naturally occurring substances known. Ricin is toxic by numerous exposure routes and its use by terrorists might involve poisoning of water or foodstuffs, inoculation ricin-laced projectiles, or aerosolization of liquid ricin or distribution of powder.
Ricin
Abrin
Croton
Chilly
Toxicology - 2