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Business & finance
Pixel
24x24 Free Pixel Icons
open, Lock
Black
24x24
Lock
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Network & communications
16x16 Free Application Icons
secure, Log in, pass
16x16
Key, Log in, login
SandyBrown
Lock, security, pwd
Files & folders
ExplodingBoy Pixel Icons
Coral
20x20
CornflowerBlue
LightGray
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64x62 icon practice
WhiteSmoke
64x64
Family & home
IconBeast Lite
30x30
UI
Bijou
8x10
Blueberry
SkyBlue
32x32
Computer & hardware
Strabo
Lock, Unlocked
Gray
Goldenrod
Windows 8 Pack (Metro Style)
DarkSlateGray
26x26
Mixed
Frankfurt
DarkOrange
Avatars & smileys
Hamburg
DimGray
Random icons
Lock, private, locked
IconSweets 2
Cloud, Lock, ligtning
40x40
Safe, Lock, timer
WooCons #1
Lock, Closed, padlock
Gold
Sketchdock Ecommerce Icons
Log in, login, Lock
RoyalBlue