Article · Wikipedia archive · Last revised Jul 19, 2026

Hybris (computer worm)

Hybris is a computer worm believed to have been 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.

Last revised
Jul 19, 2026
Read time
≈ 1 min
Length
125 w
Citations
Source
Hybris
Malware details
Technical nameW95/Hybris-mm
AliasesSnow White, Hahaha
TypeMass mailer
SubtypeWin32 worm
ClassificationComputer worm
FamilyHybris
Isolation dateSeptember 2001
OriginBrazil
AuthorVecna

Hybris (also known as Snow White, Vecna.22528, and Full Moon) is a computer worm believed to have been 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 typically comes from an email that appears to be from "hahaha" email ID. 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".

External links