My gut feel tells me that both decent ICO and BCT are being DDoSed. There might be a group that pointed their botnets to these sites to that one or more of the following can happen:

1) Unavailability of the ICO site except for the group that can send through a lot of BTC to fill up the 50% bonus
2) DDoS the ICO site so that while attention is diverted they can inject the real payload to compromise the server and later get hold of the deposited BTC
3) DDoS BCT at the same time to disrupt communications and co-ordination around issues people have with the ICO to hide the size of the issue and to cause disarray