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Gaming & gambling
3D
Free Game Icons
Unlock, open, hack
Black
64x64
secure, Authentication, password
Antivirus, locked, secure
login, secrecy, Golden
Avatars & smileys
Free Large Boss Icon Set
stupid, strong, power
512x512
shiled, stupid, strong
Photography & graphic design
32x32 Free Design Icons
locked, Key, secure
32x32
Key, password, login
Photorealistic
48x48 Free Object Icons
locked, Hide, login
48x48
security, privacy, Restriction
private, Protection, security
Unlock, Safe, secure
Protection, Close, Safe
Khaki
security, Lock, secure
Unlock, Key, locked
Network & communications
Pixel
16x16 Free Application Icons
secure, Log in, pass
16x16
Key, Log in, login
Lock, security, pwd
Business & finance
Glyph
Gentle Edges Icon Set
Key, password
128x128
PNG ICO ICNS SVG MORE
Mixed
Flat UI Icons Free
Unlock, password, secure
Desktop apps
Demo Professional Toolbar Icons
word, parole, Door
Smooth
Farm-fresh
password, Change
16x16 Free Toolbar Icons
password, Close, secrecy
PNG MORE
IconSweets 2
Key, Brush, password
40x40
