A hacking group based in China known within the cybersecurity community as the so-called APT10 Group was likely involved in a hacking incident that targeted the Japan Business Federation, also known as the Keidanren, in 2016, cybersecurity experts said Sunday.

They said the type of virus detected and servers involved in the cyberattack on Keidanren were identical to those used in past cases attributed to APT10.

The business lobby said in November 2016 that internal data had been leaked from personal computers. Its investigative team has found a large volume of suspicious data communications between 10 external servers and 23 infected PCs.