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Desktop apps
Pixel
Diagona Icons
locked, password, Key
DarkGoldenrod
16x16
Splashyfish
osx, locked, Application
WhiteSmoke
windows, locked, Application
Box, locked
Khaki
locked, A4, document
Silver
Letter, locked, document
Snow
locked, documents
locked, Folder, Classic
locked, Folder, stuffed
Folder, locked
DeepSkyBlue
Folder, modernist, locked
modernist, Folder, stuffed
Folder, stuffed, locked
locked, Lock, large
Peru
Lock, locked
SandyBrown