LTC mining on CPU is now harder with recent rise of network, however CPUs still giving relatively nice hashrate.
This good profitability to compute on high number on CPUs seems to have attracted some "bad guys".
If you look at some of the top miners hashrate it really look like some kind of botnet mining (hashrate out of this world, you could count how many GPUs and electricity they need).
Is it possible to do something against that, or is it some other explanation of their hashrate?