@fify-- Well I think it can be prevented to some degree. For example, lawyers or witnesses may be put under protection if the court feels that they are being intimidated or if their life is under danger due to a case. I'm not sure what else is done aside from this to prevent abuse of process.
This also depends largely on the country and the judicial system involved. Some countries have more effective judicial systems with more measures to prevent abuse and manipulation. In some countries, unfortunately, the judicial system is a joke and abuse of process is widespread.