Nemyst writes "One of my friends is running a relatively popular online community, but he's run into a problem. With success comes the usual load of idiots and one of them, after being banned, decided to react by DDoS'ing the site. The person has been identified; name, address, all that. The problem is, what can he do from that point onwards? The guy's a minor, so that doesn't help. Can he get in contact with certain authorities that will actually do something? The attacks are costing him money and the community as more and more people leave due to the server being down half the time. I've looked about and so has he, but so far we've come up empty-handed. Unfortunately, getting a new, more powerful server is just about out of range (the current server is already costing a pretty penny). I'm sure there are sysadmins among the Slashdot crowd who have already dealt with hackers of that kind, so what did you do about it?"