The chapter will cover one of the most critical and devastating issues in cyber abuse, namely cybercrime. The chapter will start by describing the different forms of cybercrime, such as cyber hacking, cyberattacks, phishing, insurance fraud, online consumer fraud, and more. The chapter will continue by presenting theories regarding the reasons behind the motivations that lead each Dark Tetrad personality to commit cybercrimes. The final section of the chapter will present findings about the relationship between each Dark Tetrad trait and the different forms of cybercrime.