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Business & finance
Flat
Business Productivity (Set 1)
Check, Business, Firewall
Gainsboro
512x512
Glyph
Font Awesome
shield
Black
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Free Flat Business Icons
security, Guard, Firewall
DarkSlateBlue
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Office Vol.4
shield, Safe, security
PaleGoldenrod
Guard, shield, protect
Banking And Finance
secure, Safe, insurance
Silver
Pixel
24x24 Free Pixel Icons
24x24
24x24 Free Application Icons
SteelBlue
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Gentle Edges Icon Set
Antivirus, shield
128x128
Minicons Free
three, shield
45x46
3D
Refresh CL
shield, Firewall, Check
256x256