who creates computer viruses?

[rkbehera1]

Those who are involved in all sorts of Online activities are well aware of Computer viruses and disruptions of work due to viruses . Unlike disease viruses,PC viruses are not spread automatically.Viruses are created and Pre-programmed by human beings to spread.Who are the creators?Creating Computer viruses are sophisticated job and are done by software experts with negative mindset.They are funded by big software companies.Do you agree with me?