LOL I was embezzlement proof also when I had my main company. Under 3 Million a year in sales. I signed every check and was main keeper of the bank . MY office Manager certainly did most of the accounting entries but I knew in a second if something was off.
I have worked a few files where there had been theft and I was gob smacked how owners had no idea they were being stolen from. I have had other clients who even though they never touch the books they have an uncanny ability to just know what AP and Inventory is at without looking at the books.