Food Safety (HACCP) is about ensuring the food is safe, not causing harm to the consumer.
Food defence (Threat Assessment and Critical Control Point - TACCP) is related to intentional attacks aimed at causing large-scale public health harm (and to the food business, premises and even the brand as per certain certification standards) while food fraud prevention (Vulnerability Assessment and Critical Control Point - VACCP) is related to intentional adulteration and intentional deception aimed at making more money illegally using food products.