If you are on OSX, recent updates may have broken some of your certs: https://security.stackexchange.com/questions/85830/why-is-symantec-verisign-ca-appearing-a

If you are on OSX, recent updates may have broken some of your certs: https://security.stackexchange.com/questions/85830/why-is-symantec-verisign-ca-appearing-as-an-invalid-authority https://security.stackexchange.com/questions/85830/why-is-sy...