This category is for viruses that use advanced methods of protecting themselves from detection.
“The Brain virus is considered the first PC virus. It infects 360 kilobyte, 5.25 inch floppy...Brain
“BHP is one of a few Commodore 64 viruses. It is also the first full-stealth file-infecting virus...Com64/BHP
“Frodo is the first full stealth virus that can run on the DOS operating system. When a file...Frodo
“For its time, Whale was the largest virus ever discovered, weighing in at 9,216 bytes. When a...Whale
“Tequila is an advanced multipartite virus from 1991. It is notable for its armoring techniques...Tequila