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Signs & symbols
Glyph
Web UI color
green, Lock, secure
LightSeaGreen
512x512
iOS & Web User Interface Multi Circle Flat vol 3
password, Lock, security
iOS & Web User Interface Multi Circle Flat vol 7
Safe, privacy, Protected
Arrow, refresh, rewind
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Security
Flat
User icon collection
security, padlock, Lock
miscellaneous, security, unsecure
secure, security, locked
unsecure, security, locked
locked, unsecure, secure