1260 (computer virus)

1260, or V2PX,^[1][2] was a polymorphic computer virus written in 1990 by Mark Washburn. Derived from Ralf Burger's publication of the disassembled Vienna Virus source code, the 1260 added a cipher and varied its signature by randomizing its decryption algorithm. Both the 1260 and Vienna infect .COM files in the current or PATH directories upon execution. Changing an authenticated executable file is detected by most modern computer operating systems.^[3][4][5]

1260
Technical name	1260
Alias	V2P1, Chameleon
Type	DOS
Subtype	Nonresident .COM-Infector
Classification	Virus
Family	N/A
Isolation date	1990
Origin	USA
Authors	Mark Washburn