It is with great reluctance that I have just sent two DMCA notices to parties that are distributing software I’ve written in violation of the licenses. I sent informal notices to the parties a month ago, and received no replies. Two of the parties are using aliases, and I do not have postal addresses or fax numbers for either. If they do not comply, I may have to use the subpoena powers of the DMCA to obtain their addresses. I hope it does not come to that.
Portions of the software in question are licensed under the Free Software Foundation General Public License version 2. Pursuant to section 4 of that license, the parties in violation of the license have had their rights to copy, modify, sublicense or distribute those portions of the software terminated.