The following is an excellent read on how the academic peer-review system was abused and cheated, and how a journal editing team takes responsibility, investigates and is completely transparent.
Cohen et al. (2016) ‘Organised crime against the academic peer review system‘. British Journal of Clinical Pharmacology, 81(6), 1012-1017. DOI: 10.1111/bcp.12992
It is a pity this happened, but by going through this route, the academic community can learn from their mistakes, and hopefully make the chance of this happening again smaller. You can never completely prevent these things from happening, because organised crime will always try to find new ways of cheating the system. However, as the authors quite rightly state, a select minority should not be allowed to make life more difficult for the well-intended majority.
Thanks to Terry McGlynn at Small Pond Science for posting about this.