Bill sponsors Representative Mike Rogers, a Michigan Republican, and Representative C.A. "Dutch" Ruppersberger, a Maryland Democrat, have continued to work with outside groups in an effort to "fine tune the legislation to explicitly protect privacy and civil liberties," Oborne wrote.

CISPA would allow private companies such as Internet service providers to share customer communications related to cyberthreats with a wide number of government agencies. The bill would allow agencies to use the shared information for a wide range of purposes, as long as there's also a "significant" cybersecurity or national security purpose for sharing the information, .

The bill exempts private companies that share cyberthreat information in "good faith" from lawsuits from customers.

Critics, including the Center for Democracy and Technology and the American Civil Liberties Union, said the bill supersedes all U.S. privacy laws and puts few restrictions on how government agencies can use the shared information.

CDT remains in talks with Rogers and Ruppersberger, but the group still has privacy concerns, said spokesman Brock Meeks. The House Intelligence Committee, where Rogers is chairman, "continues to remain open to receiving suggestions and, from our own discussions with them, are taking these meeting seriously," he said.