The e-mail was sent from John Kinnucan, a principal at Broadband Research LLC, who was allegedly asked by the FBI to wear a wire tap.

FORBES: SAC Capital Hit With Subpoena

Telecom-equipment makers worried that their products would be required to comply with federal wire-tap laws.

ECONOMIST: The consensus machine

The scandal came to light after the discovery of a wire-tap recording, made without judicial approval, of a conversation between South Korea's ambassador to the United States and a top executive from the Samsung Group.

ECONOMIST: The past returns to haunt South Korea's secret services