So over the last while we have had a bit of a problem with people trying to hack into our linux servers via ssh. After looking at the log files, we figured out that the hacking attempts where comming from all over the world, Russia, China and the US. I eventually found this website http://www.abuse.net/ which if you can do a reverse name lookup and get the domain name, you can get the abuse email address for that domain.
After getting the various addresses i bombed off an email to each of them attaching the log files. I have not heard anything back from them yet, but the hacking attempts have really slowed down dramatically.
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