The BlackTech attack group was interviewed by NHK and was published and broadcast on NHK NEWS WEB and NRadio.

Please see here for the detail.

●NHK NEWS WEB (October 17, 2023)
[Is China behind the black tech? Information continues to be leaked...]
https://www3.nhk.or.jp/news/html/20231017/amp/k10014227731000.html

●N Raji (October 24, 2023)
[Is China behind “black tech” causing damage to Japanese companies? ]
https://www.nhk.jp/p/nradi/rs/X7R2P2PW5P/
*The broadcast will be broadcast on NHK Net Radio "Rajirurajiru" until 8pm on Tuesday, October 31st.
https://www.nhk.or.jp/radio/player/ondemand.html?p=4774_05_3897989

Macnica has an R&D organization called the Security Research Center, which conducts research focusing on cyber threats targeting Japan.