Agriculture has undergone a digital revolution in recent years. Advanced technologies such as the Internet of Things (IoT), artificial intelligence, autonomous machines, and cloud data collection have been introduced. We refer to this as Agriculture 4.0 and 5.0. Although such innovations bring measurable benefits in terms of efficiency, adaptability to capabilities, and sustainability, they simultaneously expose agricultural infrastructure to an increasing number of cyber threats. The greater the risks, the less aware the farmers are in this regard. This article provides an overview of research on the connections between cybersecurity and food security, focusing on the analysis of cyberattacks targeting digital agricultural systems. A typology of the main threats, their potential impacts on food supply chains, and a review of current legal regulations have been presented. Based on case studies and international policy, critical security gaps, regulatory and ethical deficiencies have been identified, and directions for further research and practical actions have been proposed. The article emphasizes the necessity of integrated strategies that combine technical, legal, and educational aspects to enhance the resilience of food systems against cyber threats.