In February 2014, Troels Oerting reported successes that the unit had had in 2013.[11] These included catching internet extortioners, with 13 arrests.[11] They had also been involved in fighting malware attacks on banks using botnets and – in cooperation with Microsoft and experts from the German Federal Criminal Police Office – taking down the ZeroAccess botnet.[11] In 2014, details were revealed of Operation Onymous, which took down a number of Darknet sites, including Pandora , Cloud 9, Hydra, Blue Sky, Topix, Flugsvamp, Cannabis Road, Black Market and Silk Road 2.0.[12]