Most sensitive appears to be discussion of what legal strategy to pursue in the cases of Ryan Cleary and Jake Davis, two British suspects linked to Anonymous. The U.K. police official on the call said prosecutors were secretly going to court to delay procedures in order to give the FBI more time pursue a related case.
When the FBI official thanked his U.K. counterpart for the favor, the Briton said cheerily: "We're here to help!"
Karen Todner, a lawyer for Cleary, said the recording could be "incredibly sensitive" and warned that such data breaches had the potential to derail the police investigation.
"If they haven't secured their email it could potentially prejudice the investigation," she told the AP.
Anonymous, an amorphous collection of Internet enthusiasts, pranksters and activists, has increasingly focused its attention on law enforcement agencies in general and the FBI in particular.
The hackers' targets have included the Church of Scientology, the music industry and financial companies such as Visa and MasterCard. It has recently expanded to include government, police and military targets.
Dozens of suspected members and supporters have been arrested across the world.
Associated Press Writers Pete Yost in Washington, Cassandra Vinograd in London, Brian Skoloff in Salt Lake City, Denise Lavoie in Boston and Jamey Keaten in Paris contributed to this report.
Raphael Satter can be reached at: http://twitter.com/razhael
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