WASHINGTON, United States (AFP) — The US Justice Department on Thursday indicted two Chinese hackers tied to Beijing’s security services who allegedly targeted companies and agencies in a dozen countries, which US officials said showed President Xi Jinping had not fulfilled his pledge to stop cybercrime.

Deputy Attorney General Rod Rosenstein said the move was being made to rebuff “China’s economic aggression.”

The Justice Department said the hackers had targeted numerous managed service providers (MSPs), specialist firms which help other companies manage their information technology systems — potentially giving hackers an entry into the computer networks of dozens of companies.

Companies who were hacked were not named, but 45 victims in the United States included key government agencies — the NASA Goddard Space Centre and Jet Propulsion Laboratory, the Department of Energy’s Lawrence Berkeley National Laboratory, and the US Navy, where the personal information of more than 100,000 personnel was stolen.

Internationally, the hackers accessed the computers of a major bank, three telecommunications or consumer electronics companies, mining and health care companies, and business consultancies.

Rosenstein slammed Beijing for repeatedly violating a pledge made by Xi to then-president Barack Obama in 2015 to halt cyber-attacks on US companies and commercial infrastructure.

“These defendants allegedly compromised MSP clients in at least a dozen countries,” Rosenstein said. “It is unacceptable that we continue to uncover cybercrime committed by China against other nations.”

“We want China to cease its illegal cyber activities and honour its commitment to the international community,” he said. “But the evidence suggests that China may not intend to live up to its promises.”

In London, the Foreign Office likewise accused China of not living up to their bilateral agreement against hacking driven by commercial and economic motives.

“These activities must stop. They go against the commitments made to the UK in 2015, and, as part of the G20, not to conduct or support cyber-enabled theft of intellectual property or trade secrets,” Foreign Secretary Jeremy Hunt said in a statement.

The Justice Department said the two hackers, Zhu Hua and Zhang Shilong, worked for the so-called APT10 group which Washington, London and other allies say is backed by China’s Ministry of State Security.

From at least 2006 to 2018, the APT10 Group “conducted extensive campaigns of intrusions into computer systems around the world,” the US Justice Department said.

APT10 stole “hundreds of gigabytes” of sensitive data and information from its targets, invading their systems through the hacked MSPs.

The indictments of the two hackers came less than two months after US indicted 10 Chinese also linked to APT10, including two intelligence officers, over a five-year scheme to steal aircraft engine technology from US and French aerospace firms.

Those cases involved both hacking and recruiting insiders to steal data and IT system passwords.

Relations between Washington and Beijing are already frayed over trade, hacking and geopolitical issues.

In October, the Department of Justice obtained the unprecedented extradition of a senior Chinese intelligence official from Belgium to stand trial in the United States for running the effort to steal US aviation industry secrets.