You can also increase your mining gains:

The idea is to delay the next difficulty jump a bit which means that you will get "cheaper" BC for some more hours compared to the situation without disruptions. At the same time, parts of your competition can't use this "cheaper mining time", because they are DDOSed. As a result, you got a slightly bigger piece of the cake. It's hard to calculate the gains exactly, but if you have cheap access to a botnet and also some nice hash-rate at hand, I think it can be quite profitable.