A profile of Dark Avenger, a pseudonymous PC virus writer from Bulgaria who gained notoriety in the 1990s after the country became known as the “virus factory” (Scott J Shapiro/The Guardian)

Scott J Shapiro / The Guardian:
A profile of Dark Avenger, a pseudonymous PC virus writer from Bulgaria who gained notoriety in the 1990s after the country became known as the “virus factory”  —  Bulgaria in the 1980s became known as the ‘virus factory’, where hundreds of malicious computer programs were unleashed to wreak havoc.