Artificial Intelligence (AI) has transformed digital forensics and cybersecurity, enhancing efficiency and accuracy in combating cybercrime and analyzing evidence. This chapter will explore AI's capabilities in handling vast data, identifying patterns, reconstructing crime scenes, and detecting anomalies that have revolutionized investigations.. However, these technologies also pose challenges, including ethical concerns, algorithmic bias, privacy issues, and potential misuse. In cybersecurity, AI facilitates real-time threat detection, fraud prevention, and cross-border cooperation against cyberattacks. Despite these advancements, addressing challenges like international legal inconsistencies, transparency, and ethical implications is critical. As AI evolves, its integration into forensic science and cybersecurity holds immense potential to uphold justice and security, demanding balanced governance to ensure ethical and lawful applications.