PNG ICO ICNS MORE
Hand Drawn Web Icons
Encrypted, Email
Gainsboro
128x128
Oxygen
key hole, document, security
PNG ICO ICNS SVG MORE
Mixed
Smooth
Tango Icon Library
Encrypted, network, wireless
512x512
UI
Handdrawn
Hand Drawn Web Icon Set
Computer & hardware
3D
Human o2
Encrypted, Pgp
Network & communications
key hole, Lock, Encrypted