I trust my wife, usually my kids, and my dogs.
I remember talking with a guy who had been a plant manager in East Germany before the Wall fell. Afterwards, the new German government allowed anyone who had a Stasi file on them (most of the population) to view their files. He said he made a big mistake in doing so - most of the info. in his file was inconsequential but he was more bothered by the informants. These included: his mother (he didn’t blame her, she was old and kind of out of it); his ex-wife (to be expected); his brother, who had always been extremely jealous. But the one that really hurt was his own daughter, whom he trusted implicitly. I also remember taking a relative to work daily at a local restaurant that was open 24 hours; the owner was extremely hard working and successful Greek guy who came to the US as a dishwasher and ended up being on Bank boards. I asked him why I always saw either him or his wife at the cash register - he replied that in “this business, you trust only your immediate family around cash”. I guess it comes down to the phrase I see occasionally in corner stores: “In God We Trust, all others pay cash”.