PNG ICO ICNS SVG MORE
Signs & symbols
Flat
Circle Icons
Protection, shield, security
IndianRed
512x512
PNG MORE
Mixed
Office Vol.2
locked, private, Lock
password, Unlock, login
PNG ICO ICNS MORE
Anchor
security
128x128
UI
3D
Momentum Matte icons
32x32
Desktop apps
Cartoon
Puck icons pack II
security, Center, Mcafee
300x300
Pixel
Sizicons
red, security
16x16
Smooth
3D Cartoons III
security, Mcafee, Center
Sleek XP: Software
Mcafee, Center, security