A computer virus is a software program written to replicate itself by modifying other programs or code stored in a disk's boot sector. It is generally accepted that the first known computer virus was Creeper written for the TENEX operating system on the DEC PDP-10 in 1971.
In the 8-bit era of home computing viruses were transmitted as much by "sneakernet" as by actual telecommunications networks.
The first virus for the C64 was the BHP-Virus which originated in Germany circa 1986.
Known C64 Viruses
- BU\A Virus
- Bit Addict
- Shadow Virus for GEOS