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Security
Flat
Network
security, Protection, password
DarkSlateGray
512x512
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shapes
Vaadin icons
shapes, symbol, Passkey
other
Access, password, tool
password, Access, tool
savings, password, banking
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Free icons for Windows8/Metro
password
Carpelinx
Key, password
128x128
Dark Glass
Key, binding, password
Oxygen
48x48
Dropline Neu!
password, Dialog
Silk
Key, movie, password
16x16
Dvd, Key, disc
2001 Space Odyssey
Key, password, hal
Mobile apps
Glyph
app types in grey
Safe, security, secure
Signs & symbols
Smooth
Two Tone Design Set
security, secure, password