PNG ICO ICNS MORE
Music & multimedia
3D
Orchestra
Lock
Black
256x256
Lock, Mydocuments
mypc, Lock
Recyclebin, Lock
Business & finance
Seven General Icons
Lock, password, secure
Vista General Icons
security, privacy, Lock
Computer & hardware
Luminight General Icons
Lock, secure
Xmac
Security
Golden
Network & communications
BeOS
128x128
PNG MORE
Desktop apps
Free Applications Icons
Lock, clef, private
24x24
Log in, private, password
Key, private, login
Protection, secured, private
Unlocked, password, Protection
Phuzion
Lock, security
Human o2
open, Lock
Travel & hotels
Bags and boxes
security, safety, Lock
Mixed
Iconza
32x32
Unlock, Lock