The New York Times reports that hundreds of human rights activists, government officials, and businesspeople named in the Wikileaks cables have been warned by the State Department of threats to their safety, and some have been moved to safer locations.

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 the organization WikiLeaks has damaged American interests by exposing foreigners who supply valuable information to the United States.

Administration officials said 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 New York Times and several other publications, many with some names removed. But they caution that many dissidents are under constant harassment from their governments, so it is difficult to be certain of the cause of actions against them.

The officials declined to discuss details about people contacted by the State Department in recent weeks, saying only that a few were relocated within their home countries and that a few others were moved abroad.

The State Department is mainly concerned about the cables that have yet to be published or posted on Web sites — nearly 99 percent of the archive of 251,287 cables obtained by WikiLeaks. With cables continuing to trickle out, they said, protecting those identified will be a complex, delicate and long-term undertaking. The State Department said it had combed through a majority of the quarter-million cables and distributed many to embassies for review by diplomats there.

“We feel responsible for doing everything possible to protect these people,” said Michael H. Posner, the assistant secretary of state for democracy, human rights and labor, who is overseeing the effort. “We’re taking it extremely seriously.”

Which is more than Wikileaks did.