Decocidio (stylized as decocidio) is an anonymous, autonomous collective of hacktivists founded by lea, also known as 0xlea, a Belgian-Brazilian hacker. Decocidio is part of Earth First!, a radical environmental protest organisation, and adheres to Climate Justice Action. In their hacks the group shows affiliation with the autonomous Hackbloc collective. The name decocidio is a type of word play which refers to the act of killing code. The noun consists of the stem deco- and the suffix -cidio: