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Mixed
Flat
The shine of small things
protect, Key, privacy
Black
512x512
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Signs & symbols
Glyph
Miscellany Web icons
padlock, security, protect
371x512
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Network & communications
Photorealistic
Network
shield, Firewall, protect
Firebrick
safety, shield, protect
Firewall, shield, safety
Files & folders
3D
Folders
protect, mac, Folder
SteelBlue
Mobile apps
Apps
protect, shield, Antispyware
Gold
Electronics & appliances
Tools and Devices
Badge, security, shield
Peru
Antivirus, Defender, protect
ForestGreen
Lock, Encrypt, Key
Buttons
security, protect, warning
Goldenrod
help, Protection, security
Teal
Block, protect, shield
OliveDrab
protect, shield, ok
Block, ban, Adware
Business & finance
Free Flat Business Icons
Unlock, Lock, protect
DarkSlateBlue
security, Guard, Firewall
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Education & science
Outline
Line mix Vol.2
secure, safety, shield
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Filled outline
Line color mix Vol.1
Firewall, safety, shield
DimGray
Line color mix Vol.2
secure, Protection, security
Line color mix Vol.3
LightSlateGray
Music & multimedia
Line mix Vol.1
security, safety, protect
Mayssam
Account, Saving, save
Basic icon element
security, Lock, protect