Missing items in Security Provider Type
I made a new install of Coveo Enterprise Search, but when i create a new Security Provider is missing some items on field Security provider type. Like, i'm trying to make this security provider for sitecore and don't have the option "Sitecore2" I only have Active Directory, Custom and Sharepoint.
Confirmed bug. It will be fixed in Coveo Enterprise Search August 2015's version.
If you're working with Coveo for Sitecore, you don't need to manually create your security provider. The Coveo for Sitecore search provider module inside Sitecore will take care of creating and configuring it automatically when you will index your first item from Sitecore.