There are multiple artists named Access Denied. The first is a breakbeat DJ and live act from Brest, Belarus. The second is a dutchelectronic music group consisting of Erik van Vliet and Rene Van Der Weyde The third is polish metal band from Gdańsk. There's also a German EBM/synthpop/electro band with this name. Sometimes labeled as Acces_Denied, sometimes without the underscore.
They released tracks on various electronic samplers, some singles, at least one remix-cd and a box.