Must be that time of year.
Our area someone took off with 20mil. Funds for many villages. Still meetings about it.
No really been following to closely but from what I gather a cleaner/helper at the bank used to offer to do the work on the computer for funds deposits. (You know how it is, there is always someone at the bank to help you when you come in, usually the guard or cleaner).
The bank manager said not his problem as they were not his bank staff but the cleaner. The Ampher mob said, but she was using your bank computer.....twists and turns.
We had our Petty Cash clerk (nice guy, used to play snooker with him), never take lond holidays. Day here, day there and therefore never got audited for years.
One day they said we have to audit the petty cash and never saw him again. Cash missing over years.