They may be well established, but remember ComodoGate [1,2]. [1] https://en.wikipedia.org/wiki/Comodo_Group#Breach_of_security https://en.wikipedia.org/wiki/Co

They may be well established, but remember ComodoGate [1,2]. [1] https://en.wikipedia.org/wiki/Comodo_Group#Breach_of_security https://en.wikipedia.org/wiki/Comodo_Group#Breach_of_securit... [2] http://www.securelist.com/en/blog/6177/A_Web_of_Mis_Trust_Comodogate_Part_II http://www.securelist.com/en/blog/6177/A_Web_of_Mis_Trust_Co...