Pure speculation here, which is kind of appropriate as the whole chia thing is purely speculative.

1.Some kind of malicious attack from an external source

2.Some kind of scam/hack to game the system for someone

3.Bram is downloading porn and got the bittorrent network and the chia networks mixed up

4.An overload situation due to unexpected rate of growth

5.elon musk's bloody spaceship landed on a timelord

3と5糞ワロタ