Chrome and Firefox Enterprise Settings
Firefox
To remove security warnings (due to Symantec Endpoint Protection and other antivirus/firewall):
about:config -> security.enterprise_roots.enabled -> set to true
Chrome
Solve "Aw, Snap!" errors: add --disable-features=RendererCodeIntegrity flag to shortcut, this is because security/firewall software inject code into the binary of Chrome, thus failing the code integrity check