The Year in Review series examines the most important trends, people, and companies in science and technology in 2023, with a focus on cybercrime. The rise of teenage hackers, who use social engineering to breach security, has become a major threat. Additionally, the emergence of double extortion attacks, in which hackers not only encrypt data but also threaten to release it online, has caused concern. The use of artificial intelligence has also enabled hackers to create more convincing phishing attacks. Furthermore, new techniques in distributed denial-of-service (DDoS) attacks have made them more severe and difficult to combat, leading to the disruption of major websites and services. The increase in cybercrime activities, particularly those involving teenagers, and the use of new tactics such as double extortion and AI in cyberattacks, have made the internet a more dangerous place in 2023. The lack of preventative measures to address teenage cybercrime and the increase in the use of advanced technologies such as AI and DDoS attacks suggest that these threats will continue to escalate in the future.