Cerberus icon kit (fanged C).

cerberus-mark-white.svg / cerberus-mark-black.svg — scalable masters.
  White for dark backgrounds, black for light backgrounds.
cerberus-mark-{white,black}-{16,32,180,512}.png — transparent rasters.
apple-touch-icon.png — 180x180 black tile for iOS home screen.
favicon.ico — 16/32/48 black tile for browser tabs.

Free to download and use, same terms as https://kraftify.net/cerberus.
