Mainly, the group is angry at the UN body International Telecommunications Union, who is trying to "give U.N. countries' governments a stronger mandate over the Internet traffic flowing through their territory and allow control of domain name allocations by a central U.N. body."
Reads Ghostshell's post: "The ITU is hosting a meeting right now that may very well decide the fate of how the [internet] will be managed in the future. Basically the UN may very well give total power to the ITU on how to handle everything. The data dump is promoting hacktivism worldwide and drawing attention to the freedom of information on the net. For those two factors we have prepared a juicy release of 1.6 million accounts/records from fields such as aerospace, nanotechnology, banking, law, education, government, military, all kinds of wacky companies & corporations working for the department of defense, airlines and more."
Google has also loudly protested the new proposal, and submitted a million-signature petition opposing it.