The US has warned hundreds of human rights activists, foreign government officials and businesspeople identified in leaked diplomatic cables of potential threats to their safety and also moved a handful of them to safer locations, officials said. The operation, which involves a team of 30 in Washington and embassies from Afghanistan to Zimbabwe, reflects the administration's fear that the disclosure of cables obtained by WikiLeaks has damaged American interests by exposing foreigners who supply valuable information to the US, The New York Times reported. State Department officials said Thursday they were not aware of anyone who has been attacked or imprisoned as a direct result of information in the 2,700 cables that have been made public to date by WikiLeaks, The Times and several other publications, many with some names removed. But they caution that many dissidents were under constant harassment from their governments. The officials declined to discuss details about people contacted by the State Department, saying a few were relocated within their home countries and that a few others were moved abroad. The State Department is mainly concerned about cables that have yet to be published or posted on websites - nearly 99 percent of the archive of 251,287 cables obtained by WikiLeaks.