PNG ICO ICNS MORE
Network & communications
Smooth
Computer Hardware and Networking
locked, Workstation
Black
256x256
Signs & symbols
Two Tone Design Set
Unlock, password, security
Chocolate
128x128
security, secure, password
DarkSlateGray
PNG ICO ICNS SVG MORE
Computer & hardware
Glyph
Ionicons
locked
512x512
Mixed
Outline
Linecons Free – Vector Icons Pack
Lock, secure, password
Gaming & gambling
3D
Free Game Icons
privacy, locked, Restriction
64x64
Entrance, pent, Cell
DarkKhaki
Antivirus, locked, secure
Photography & graphic design
32x32 Free Design Icons
locked, Key, secure
32x32
Photorealistic
48x48 Free Object Icons
locked, Hide, login
48x48
security, privacy, Restriction
private, Protection, security
Unlock, Safe, secure
Protection, Close, Safe
Khaki
security, Lock, secure
Unlock, Key, locked
Business & finance
48x48 Free Time Icons
warning, Alert, Hand
Red
Pixel
16x16 Free Application Icons
secure, Log in, pass
16x16
Key, Log in, login
Lock, security, pwd
Pittogrammi
locked, Lock
Devine Icons Part 2