PNG ICO ICNS MORE
Network & communications
Pixel
16x16 Free Application Icons
secure, Log in, pass
Black
16x16
Key, Log in, login
Lock, security, pwd
Mixed
PixeloPhilia
security
DarkGreen
32x32
Desktop apps
Sizicons
green, security
MediumSeaGreen
red, security
IndianRed
security, Orange
SandyBrown
Computer & hardware
Sweetie BasePack
Key, security
Peru
open, Lock, security
DarkGray
security, Lock
PNG MORE
24x24
Lock, security
security, Lock, open
UI
BWPX
WhiteSmoke
18x18
Diagona Icons
security, password, Lock
ASP.NET icons
security, delete
Khaki
security, Add
Gold
Edit, security
Circular
Closed, security, padlock
DRF
security, safety, secure
Mini
Goldenrod
list, security
PowderBlue
security, Page