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So can the BlackTech Hacking group be considered BlackHats???
BlackTech Hacking Group is backdooring Cisco Devices
https://www.bleepingcomputer.com/news/security/us-and-japan-warn-of-chinese-hackers-backdooring-cisco-routers/
US and Japan warn of Chinese hackers backdooring Cisco routers
A joint cybersecurity advisory by the FBI, NSA, CISA, and the Japanese NISC (cybersecurity) and NPA (police) sheds light on the techniques the Chinese threat actors known as BlackTech use to attack Japanese and U.S. organizations.
https://www.bleepingcomputer.com/news/security/us-and-japan-warn-of-chinese-hackers-backdooring-cisco-routers/
Reading the list of items in the article, it looks like standard setup 101.
I'm not really a network person, but I did manage a cisco router for my home a few years ago. Most of these appear to be what were considered standard setup items.
A few years ago, If you were to stick a device on the internet it would be discovered by bots within 5-10 minutes and auto hacks will begin soon after.