By Brendan Sasso - 07/18/12 06:01 PM EDT
At kickoff events around the world on Thursday night, supporters will turn on "cat signal" spotlights as an unofficial symbol of the coalition.
Early members of the Internet Defense League include Mozilla, Reddit, Imgur, the Electronic Frontier Foundation and Public Knowledge.
Lawmakers who support the group include Rep. Darrell Issa (R-Calif.) and Sens. Ron Wyden (D-Ore.) and Jerry Moran (R-Ks.).
On its website, the group says it is targeting the Anti-Counterfeiting Trade Agreement (ACTA) and the Cyber Intelligence Sharing and Protection Act (CISPA) for defeat.
Issa was a leading opponent of SOPA, but he voted for CISPA, a cybersecurity bill that would increase information sharing between the government and the private sector, when it passed the House in April.