Since it is Christmas and we are talking about welcoming strangers in your house, I think we need to remember the story of the author of the most popular Christmas Carrol ("Carrol of the bells") - Ukrainian composer Mykola Leontovych.

His family was hosting a stranger in their house for the night in 1921. Stranger said he has nowhere to go, so they allowed him to stay in the room with Leontovych himself.

The stranger ended up being a Russia undercover checkist who killed Leontovych and robbed his family. [0]

[0] - https://en.wikipedia.org/wiki/Mykola_Leontovych#Death

What is your intent in sharing this? Why do we need to remember this story? Do you - and others who are talking about how strangers might murder you and your family - really think that people don't consider that risk or something?