Cybercrime is rapidly evolving in parallel with global digital transformation, posing an increasing challenge to government, security and academic institutions. This article aims to highlight the role of artificial intelligence in detecting and preventing cybercrime, through machine learning techniques, big data analysis, and intrusion detection systems, while discussing the most prominent ethical and technical challenges associated with the use of these technologies Cybercrime has become one of the most serious contemporary threats, including hacks, digital fraud, identity theft, and ransomware attacks. With the increasing reliance on digital networks and systems, the need for smart solutions capable of responding immediately to threats has emerged. This is where the role of artificial intelligence as a strategic tool to enhance cybersecurity Artificial intelligence techniques used in the fight against cybercrime 1. Machine Learning: It is used to analyze behavioral patterns and detect abnormal activities within networks. 2. Deep Learning: Contributes to the detection of malware and the analysis of fraudulent messages with high accuracy. 3. Intrusion Detection Systems: It relies on smart algorithms to monitor hacking attempts in real time. 4. Big Data Analysis: Enables the processing of millions of digital records to extract threat indicators Contributions of artificial intelligence to enhancing cybersecurity • Rapid response to attacks: reduce threat detection time. • Predicting future attacks: by analyzing historical data. • Reducing human errors: through automation and accurate analysis. • Supporting digital investigations: through the analysis of electronic evidence quickly and efficiently Challenges and ethical considerations Despite the significant benefits, AI applications face challenges related to privacy protection, the possibility of algorithmic bias, and the possibility of exploiting the same technologies by cybercriminals. Clear legal and ethical frameworks are required to ensure the responsible use of this technology Artificial intelligence has proven its ability to be the first line of defense in the face of cybercrime, through intelligent analysis, early prediction and rapid response. As technical development continues, its applications in the security field are expected to expand, provided that ethical and legal standards are adhered to. Integrating human expertise with smart technologies represents the best path towards a safer digital environment