Whistleblowing website Wikileaks has begun publishing the first of more than five million confidential emails from US-based security think tank Stratfor.
The group said the documents would reveal Stratfor's "web of informers, pay-off structure, payment-laundering techniques and psychological methods".
Stratfor's computers were hacked by the activist group Anonymous in December.
Stratfor boss George Friedman said at the time anyone looking for signs of a vast conspiracy would be disappointed.
The firm warned ahead of the Wikileaks publication that it would make no comment on whether any of the emails were authentic or inaccurate.
"Having had our property stolen, we will not be victimised twice by submitting to questioning about them," Stratfor said in a statement.