(CNN) Democratic presidential candidate Hillary Clinton unleashed some of the strongest words to date about China's hacking of U.S. computers.

China is "trying to hack into everything that doesn't move" in the United States, Clinton said, accusing the Chinese of stealing information from both businesses and government agencies.

China is suspected of the recent theft of the personal data of about 18 million current, former and prospective federal employees who were affected by a cyber breach at the Office of Personnel Management.

Director of National Intelligence James Clapper told an intelligence conference last month that the Chinese are "the leading suspect" in the massive hack of the OPM.

"They're also trying to hack into everything that doesn't move in America," Clinton said at a campaign event in Glen, New Hampshire. "Stealing commercial secrets, blueprints from defense contractors, stealing huge amounts of government information. All looking for an advantage."

Read More