PNG SVG PSD EPS MORE
Security
Flat
Work productivity
Key, password, security
DimGray
512x512
User interface
password, security, Alarm
Protection, security, Passkey
PNG ICO MORE
Android icons
zoom, password
72x72
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Horizon
password, Box
16x16
Nuvola
Key, password
48x48
password, Key
Siena
256x256
Farm-Fresh Web
video, film, password
32x32
Silk Companion 1
Key, vector, password
Fugue
File, password, document
PNG MORE
Mixed
Office Vol.3
locked, login, security
login, locked, Approved
password, unprotected, login
locked, login, Protected
UI
Pixel
Fugue Icons
Text, password, field
Computer & hardware
3D
Human o2
security, Lock, Keyring
128x128