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UI
Pixel
Fugue Icons
ok, shield, Check
Green
16x16
Desktop apps
Smooth
One bit
Protection, shield, Antivirus
Teal
48x48
shield, Antivirus
Chocolate
Splashyfish
shield
Gold
shield, Chevrons
star, shield
Shopping & e-commerce
Woothemes Ultimate Icon Set
Black
128x128
web, shield
Mixed
Led Icons
cross, shield
Firebrick
shield, cross
DarkGoldenrod
Glyph
Ecqlipse 2
security, shield
Photography & graphic design
3D
Dark Glass
shield, Antivirus, Protection
IndianRed
Computer & hardware
Futurosoft
Clean, shield, Check
ForestGreen
Blue, help, shield
shield, Protection
Silver
windows, Folder, shield
security, shield, win
32x32
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Twotiny
12x14
Siena
green, shield, protect
256x256
shield, Blue, protect
red, shield, protect
protect, shield
DimGray
yellow, protect, shield