Security of Distributed Computing

I have the opportunity to use a remote deployment of Matlab Distributed Computing Server, and I'm concerned about security (specifically protection of the Matlab code). I would use it by running source code on a local Matlab client linked to the remote MDCS. The program on the local Matlab client would use a parfor loop to send work to the MDCS.

Are there security vulnerabilities in the transmission of the work? Or opportunities for a third party to retrieve the source code from the server running MDCS while the work is in progress? If so (which is likely), what kind of risk is there?