[pilsetnieks]

There was a joke in the Soviet Union:

  - How do you know the KGB is surveilling you?
  - A new wardrobe has just appeared in your apartment.

[sandworm101]

In parts of china, some uighur households are assigned a live-in spy, an agent openly living with the family to monitor and report on the household's activities.

https://www.independent.co.uk/news/world/asia/china-uighurs-...

"China sends state spies to live in Uighur Muslim homes and attend private family weddings and funerals"