PNG ICO ICNS MORE
UI
Pixel
Lynx Black
screen, Lock, system
DarkSlateGray
16x16
PNG MORE
Desktop apps
3D
Free Applications Icons
Lock, clef, private
Black
24x24
Log in, private, password
Key, private, login
Protection, secured, private
Unlocked, password, Protection
Business & finance
Phuzion
Lock, security
128x128
Computer & hardware
Human o2
Lock
open, Lock
Smooth
Office icons
DimGray
48x48
Mixed
Scrap
Gold
Travel & hotels
Bags and boxes
security, safety, Lock
Iconza
32x32
Unlock, Lock
security, Lock
LightSlateGray
security, Lock, Keyring
Key, security, keychain
Cryptography, password, Lock
Tan
Lock, person, Books
DodgerBlue
BWPX
Silver
18x18
Mini icons 2
Lavender
10x10