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Business & finance
Glyph
Font Awesome
Alt, Unlock
Black
512x512
Unlock
Mixed
Free Misc Icon Set 2
Lock, privacy, off
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Network & communications
Cloud Computing
password protect, Key, Lock
DarkSlateGray
SEO & web
Seo And Data
screen, Data, Magnifier
SandyBrown
iOS7 optimized
Miu
safety, stroke, Protection
private, Protection, safety
UI
Google Material Design icons
Unlock, Face
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Blogger
52x52
Very Basic 2. Android L (Lollipop)
Unique-Round-Blue
Unlock, password, Safe
DeepSkyBlue
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Mobile apps
app types in grey
Safe, security, secure
Iconic
stroke, Unlock
384x512
fill, Unlock
24x24 Free Application Icons
24x24
Pittogrammi
Unlock, Lock
Windows 8 metro style
Flat UI Icons Free
Unlock, password, secure
Windows 8 icons
26x26
Mini icon set Part 1
48x48
DarkGray
Jigsoar
64x64
Desktop apps
16x16 Free Toolbar Icons
unsecured, Access, Broken
16x16
gcons
32x32