skull with blue flames

1280 × 960

dark hexagonal background with skull

1920 × 1200

Anonymous logo on grid

1280 × 800

Skull and Crossed RAM

1280 × 960

binary skull and crossbones

1024 × 768

binary skull and crossbones

1280 × 800

Windows Logo with Skull

1280 × 1024

circuit board skull and crossbones

1280 × 960

Windows logo with skull and crossbones

1366 × 768

Windows logo with skull and crossbones

1920 × 1200

hacker skull and crossbones

1128 × 822

Linux skull and crossbones

1024 × 768