See this news article: https://www.dailymail.co.uk/news/article-13774091/BBC-used-convicted-paedophiles-chauffeur-celebrities-guests-Prime-Minister-Ted-Heath-30-years.html

“The more a social engineer can make his contact seem like business as usual, the more he allays suspicion. When people don’t have a reason to be suspicious, it’s easy for a social engineer to gain their trust. Once he’s got your trust, the drawbridge is lowered and the castle door thrown open so he can enter and take whatever information he wants” (Kevin D Mitnick).