PNG ICO ICNS MORE
Mixed
3D
Isloo
shield
OliveDrab
128x128
Vista Style Base Software
shield, green, Protected
Black
256x256
shield, Antivirus, Protection
RoyalBlue
Protection, Antivirus, green
grey, shield
Silver
Protection, shield, Antivirus
grey, warning, shield
The Spherical icon set
shield, globe
MidnightBlue
Iconza
shield, Antivirus
DarkSlateGray
32x32