PNG ICO MORE
Signs & symbols
Glyph
Buttons
Burn, Alert, warning
Black
512x512
Adware, malicious, virus
PNG ICO ICNS SVG MORE
Mixed
Basic icon element
danger, warning, safety
Free Misc Icon Set 2
Alert, problem, exclamation
Error, sign, fill
Amenities - Solid
Extinguisher, Burn, Flame
PNG SVG MORE
Simple darkcon
warning, Error, skull
324x512
problem, warning, Caution
PNG MORE
Business & finance
24x24 Free Application Icons
stop, Abort, Block
24x24