The United States has indicted ten individuals, including employees of the Chinese tech company i-Soon, for their involvement in a years-long cyber espionage campaign that targeted various US government agencies and organisations worldwide.

The campaign allegedly stole sensitive data from entities such as the US Defense Intelligence Agency, the Department of Commerce, and foreign ministry of Taiwan. The hackers, associated with i-Soon, were reportedly hired by Chinese intelligence agencies to breach email systems for substantial payments.

Along with the indictments, the US Treasury Department has imposed sanctions on Shanghai-based Heiying Information Technology and its founder, Zhou Shuai, accusing them of selling stolen data and providing access to compromised networks.

The data reportedly included information from US critical infrastructure networks. Some of this stolen data was later acquired by a previously sanctioned Chinese hacker, Yin Kecheng.

The Chinese embassy in Washington responded by condemning the sanctions and stating that it would take necessary actions to protect Chinese companies and citizens.

The US government's aggressive stance is part of an ongoing effort to curb Chinese cyber espionage activities and defend its digital infrastructure.