This is from 2019 but it does still look like good information. Although I would imagine the threat is greater now than back then, so further guidelines would

This is from 2019 but it does still look like good information. Although I would imagine the threat is greater now than back then, so further guidelines would be helpful even if most people are not aware of this much. So the title could realistically be changed to "Why not to be surprised if you fail to find hidden cameras".