A computer virus is a malicious software program that can cause damage to a computer system. The two crossword solutions for the term 'computer virus' are LOVE (4 letters) and MELISSA (7 letters). LOVE is often used to describe the relationship between people, but in this case it is being used to describe the relationship between a computer and a virus. Melissa is a computer virus that was first discovered in 1999 and caused significant damage to computers around the world. It spread quickly through email attachments and was one of the first viruses to be widely recognized.