Every transaction is automatically written to two servers, guaranteeing 7 x 24 operations. In the event of a problem requiring server repair or replacement, the system will remain online. Once the repair is complete and brought back online, both servers will automatically synchronize. Authentication PhDx uses Class 3 Secure Server certificates granted by VeriSign, a recognized digital certificate authority. Client certificates are assigned to a specific client by a certificate managing authority.
Client certificates serve to identify a given client browser to a specific web server.
PhDx is capable of creating, assigning and managing its own client certificates in order to identify incoming requests to our web server. PhDx signs its Java class archives with digital code signing certificates also granted by VeriSign. A code signing certificate serves to identify to the client which entity is responsible for the code archive wishing to install itself as a trusted program on the client's computer. Once a secure web session has begun, the client is immediately prompted for their application login ID and password. Failure to supply valid responses to either field will deny the client access to the PhDx application.