DarkMarket was an English-speaking internet cybercrime forum created by Renukanth Subramaniam in London that was shut down in 2008 after FBI agent J. Keith Mularski infiltrated it using the alias Master Splyntr, leading to more than 60 arrests worldwide. Subramaniam, who used the alias JiLsi, admitted conspiracy to defraud and was sentenced to nearly five years in prison in February 2010.