digraph {
concentrate=true;overlap=scale;"botnet=Kraken" [label="botnet\nKraken",shape=box,style=filled,color=deepskyblue];"botnet=Kraken" -> "botnet=Marina Botnet" [label="similar",dir="both"];"botnet=Marina Botnet" [label="botnet\nMarina Botnet",shape=box,style=filled,color=deepskyblue];}