Informative thread at webmasterworld:
Learn about the perpetrators. At a minimum, check and document the following:- WHOIS info for their domain – owner, contacts, nameservers, date registered.
- Determine the domain’s IP address, and do a reverse IP lookup to find out who the IP address is registered to and hence who is hosting the domain.
- Make a copy of the offending site in its current condition using a site copy tool.
- Print dated page dumps or screenshots illustrating samples of the stolen content.
- If the site owners are identifiable, research them to find company contacts, etc.
- Identify the business partners of the ripoff site, i.e., if they are running affiliate ads, determine their affiliate partner(s) and their affiliate IDs.
- Check the Wayback Machine or other archive to see if they have a copy of the offending site; document the earliest date it appears. (Or, note that it doesn’t appear at all.)