Hybris, also known as Snow White, Vecna.22528, and Full Moon, is a computer worm believed to be written by Brazilian virus writer Vecna, member of the computer virus writing group 29A. It first appeared in September 2000 and became more common in January 2001. Hybris is probably best remembered for the e-mail it distributes itself in, typically coming from Malicious "plug-ins" enhanced Hybris's functionality to include various other e-mail types. Other plugin functionalities include a spinning "wheel of hypnosis." The name Hybris originates from the text within the virus: "HYBRIS" "(c) Vecna".