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iOS7 optimized
Outline
Social Media
video, share, social-network
Black
512x512
Glyph
Grid, gaming, private
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Mobile apps
app types in grey
Safe, security, secure
DarkSlateGray
Shopping & e-commerce
3D
Amazon AWS Stencils
Copy, Service, non
UI
Windows 8 metro style
private
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Education & science
Handdrawn
Brainy Icons Free — 36 Science and Education Icons
Man, privacy, Avatar
64x64
Gaming & gambling
Free Game Icons
privacy, locked, Restriction
Antivirus, locked, secure
Photography & graphic design
32x32 Free Design Icons
Key, password, login
32x32
Photorealistic
48x48 Free Object Icons
locked, Hide, login
48x48
security, privacy, Restriction
private, Protection, security
Antivirus, Guard, Army
Protection, Close, Safe
Khaki
security, Lock, secure
Unlock, Key, locked
Network & communications
Pixel
16x16 Free Application Icons
secure, Log in, pass
16x16
Key, Log in, login
Lock, security, pwd
Music & multimedia
Smooth
Gakuseisean
Folder, private
256x256
IndianRed
Desktop apps
Milkanodised
Folder, Graphite, private
Silver
128x128
private, Folder
Lavender
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Windows 8 icons
26x26