PNG ICO ICNS MORE
Network & communications
Pixel
16x16 Free Application Icons
secure, Log in, pass
Black
16x16
Key, Log in, login
Lock, security, pwd
Computer & hardware
3D
Exempli Gratia
File, secret
WhiteSmoke
256x256
Photorealistic
secret, File
Avatars & smileys
Cartoon
POPO emotions: The Blacy
secret, smile
128x128
Mixed
My Secret
envelope, secret, Email
secret, Book
SaddleBrown
secret, Mask
DarkGray
PNG MORE
Family & home
Shrunk Pidgin Smilies
secret
Khaki
24x24
Desktop apps
Free Applications Icons
Lock, clef, private
Log in, private, password
Key, private, login
Human o2
Cryptography, password, Lock
Tan