PNG ICO ICNS SVG MORE
Signs & symbols
Glyph
Web UI
Safe, Circle, privacy
Black
512x512
Web UI color
green, Lock, secure
LightSeaGreen
Business & finance
Font Awesome
Lock
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Buttons
Error, Lock, Clear
Firebrick
Block, L, delete
Computer & hardware
Database Management
Database, Hosting, Server
DimGray
Mixed
Basic icon element
security, Lock, protect
Simple files
Lock, secure, privacy
Free Misc Icon Set 2
security, safety, on
Lock, privacy, off
PNG SVG MORE
Network & communications
Cloud Computing
password protect, Key, Lock
DarkSlateGray
Amenities - Solid
Lock, security, secure
iOS7 optimized
Miu
safety, stroke, Protection
private, Protection, safety
locked, protect, security
security, secure, protect
UI
Google Material Design icons
Lock, open
Social media
E-commerce
round, password, pass
password, pass, linecon
GlyphPack
428x512
Social Messaging & Productivity Mix Icons
handrawn, safety, open
501x512
open, remove, Folder