The people who work in and around a home know a lot. Staff, contractors, cleaners, regular deliveries, the person who walks the dog. Each is a route through which information about the household can leave, often without anyone meaning for it to.
Most of the leaving is innocent. A cleaner mentions to a friend that the family is away for the month. A contractor posts a photo of work in progress, with an address visible in the corner. A delivery driver tells a colleague about the size of the property. None of these is malicious. All of them add to a picture that, in the aggregate, is more legible than the household would prefer.
A smaller number of cases are deliberate. Information about a private household has a price in the wrong markets. An employee at the right level, with access to schedules, can sell what they know. The cases that reach the press are rare, but the channel exists, and a serious household has to know it does.
The arrangements that help are practical. Background checks done properly before hiring. Clear rules about photography on the property. Schedules and routines treated as private rather than shared casually. Staff who understand that loose talk has consequences, and a relationship in which they are paid well enough to value the position.
The desk reviews these arrangements when the work calls for it, and watches for the moments when household information surfaces online.