What was the first computer virus in the DOS system?

What was the first computer virus in the DOS system?

• I Love You Virus
• Storm Worm Virus
• Melissa Virus
• Brain Virus 

EXPLANATION

 The 1986 Brain virus is considered to be the first computer virus to infect MS-DOS and PC-DOS. It was transmitted through an infected boots sector of a floppy disk, and was originally intended to detect and track pirated copies of the authors’ floppy-based software. Unlike most modern malware, the virus included contact information for the authors. You can read more about the Brain virus here

Of course, other viruses on other platforms predated the Brain virus. The Elk Cloner virus for the Apple II appeared five years earlier, in 1981. It was also a floppy disk boot sector virus, which infected Apple DOS 3.3. And ten years before that, in 1971, the Creeper virus made its way through the ARPANET to infect DEC PDP-10 mainframe computers running the TENEX operating system. There are other examples as well, but these are considered “firsts.”

Recorded experimental work in academia with self-replicating programs dates as far back as 1949. Most of the academic efforts were never released into the wild.