A zombie attack refers to an imaginary or fictional event in which undead creatures, commonly known as zombies, attempt to harm or infect living beings. In popular culture and media, a zombie attack is often portrayed as a catastrophic event where the undead rise from their graves and seek to feed on human flesh for sustenance. The term "zombie" comes from Haitian folklore and refers to an individual who has been revived after death but is without consciousness or free will, often being controlled by a powerful external force such as magic or a virus. In many stories, zombies are depicted as slow-moving creatures that can be easily outrun or avoided; however, in some cases they may also exhibit superhuman strength and speed, making them dangerous adversaries to face. A "zombie attack" is often used metaphorically to describe a situation where an overwhelming force of something attacks or threatens to destroy something else.