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Re:The FBI investigating hacking of Covid research by “PRC-a... by gnufx on Tuesday May 26, 2020 @05:45PM (#23316802)
Yes, but if you were serious about espionage, say, you wouldn't draw attention to the compromise by running one.
Re:The FBI investigating hacking of Covid research by “PRC-a... by salawat on Wednesday May 27, 2020 @03:28PM (#23328609)
Unless you're testing a zero day, and staging an alternate route of infiltration to hide your installation of threat persistence.

I believe it's referred to as the "limited hangout" in spycraft jargon. You maintain the target's sense of security and ability to detect intrusion while you maintain the capability to reintrude at will.