How did a Chinese APT get a U.S. hacking tool before it was leaked? Check Point has a theory.
A Chinese hacking group that has been using tools linked with the National Security Agency might have obtained at least one without breaching NSA systems.
Chinese hackers found and repurposed elite NSA-linked tools
Symantec has evidence that Chinese-linked hackers were using NSA-authored tools at least a year before they were publicly leaked by the Shadow Brokers.