PNG ICO ICNS SVG MORE
Signs & symbols
Glyph
Web UI
Safe, Circle, privacy
Black
512x512
Travel & hotels
Travel and Leisure Vol 1
Do not disturb, private, privacy
Mixed
Simple files
Lock, secure, privacy
Free Misc Icon Set 2
security, safety, on
Lock, privacy, off
UI
Very Basic. Android L (Lollipop)
private, Lock, protect
Picol Vector
Data, privacy