There might be a negligible possibility of these types of threats in academic collaboration. The reason is that mostly academic collaborators are highly qualified and intelligent. Their locations are known through their addresses of work. Many of them know the implications such type of threats. Their own reputation and the reputation of their organization is associated with their behaviors.

In some fields, for example, Science and Engineering, academic collaboration is not so easy. For publishing the outcomes of collaboration, in terms of say research papers in high quality journals and conferences, each collaborator has to contribute significantly so as to claim the authorship. Ideas need a significant effort for their theoretical and practical implementations so as to make a significant contribution in the research paper. In my view, similar is true for other types of academic collaborations.

However, the situation in e-collaboration might be a bit different from academic collaboration. All of them might not be from well known or reputed institutes, therefore, some of them might not care for the reputations of their own or their formal or informal organizations. As a result, the probability of such threats is larger in case of e-collaborations rather than academic collaboration. Here, I assume that the term e-collaboration means collaboration through any social network site where identities of many of the collaborators are either not verified or not well known. Otherwise, having e-collaboration among the academic collaborators from reputed institutes or organizations will be similar to a pure academic collaboration.

Thanks, interesting points.