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Desktop apps
Pixel
Sizicons
Lock
DimGray
16x16
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22 e107-Bubbles
Admin, Lock
Gray
30x30
Diagona Icons
security, password, Lock
DarkGray
Splashyfish
Lock, modernist, Folder
DeepSkyBlue
Unlocked, large, Lock
Peru
locked, Lock, large
Lock, locked
SandyBrown
Lock, Unlocked