And nerds use instructions in hex to code a virus.

** Trivia **
The first PC to PC virus is from Pakistan.

The story goes that Basit and Amjaad Farooq Alvi, owners of a store called Brain Computer Services, wrote the boot sector virus in 1987 to stealthily leave their contact information on infected computers. Basit and Amjaad claimed they wrote the code to ascertain the extent of software piracy in Pakistan (they were, after all, software vendors). But Brain soon leaked through the Pakistani borders and quite harmlessly infected computers worldwide.