Chill out. Every system that relies on human input can be fooled and broken. How do we know this employee wasn’t the one responsible for loading new code into t

Chill out. Every system that relies on human input can be fooled and broken. How do we know this employee wasn’t the one responsible for loading new code into the machines once validated? Anyone looking to spend years infiltrating a place for a goal will do whatever it takes to circumvent security measures.