pingpong.com
pingpong.com is a DOS virus that want the bouncing balls on the screen.
Key in pingpong and then press Enter.
Here how is it:
C:\>dir/w
●<------ this is a ball bouncing around the screen
Volume in drive C is MS-DOS_6
Volume Serial Number is 325G-H19T
Directory of C:\
[DOS] [WINDOWS] COMMAND.COM WINA20.386 CONFIG.SYS
AUTOEXEC.BATPINGPONG.COM
6 file(s) 131,072 bytes
1,073,741,824 bytes free
C:\>pingpong
C:\>
You can only remove the ball until you have restart the system.