Interisle Consulting Group, LLC, Name Collision in the DNS (Ver. 1.5) (Aug. 2, 2013) (full-text).
ICANN commissioned this study on the potential security impacts of the applied-for new-gTLD strings. The study was to consider whether name collisions might occur between applied-for new gTLD strings and non-delegated TLDs that may be in use in private namespaces. The study was also to review the possibility of name collisions arising from the use of X.509 digital certificates.
This study identifies categories of strings according to the risk they represent. The Study also identifies options to mitigate the risks, however it does not make specific recommendations for each of the categories.