Overspinning a nearly extreme black hole and the Weak Cosmic Censorship   conjecture
  We revisit here the recent proposal for overspinning a nearly extreme black hole by means of a quantum tunneling process. We show that electrically neutral massless fermions evade possible back reactions effects related to superradiance, confirming the view that it would be indeed possible to form a naked singularity due to quantum effects. 
Mauricio Richartz and Alberto Saa