Cyber crimes have become one of the most serious challenges facing modern societies in the digital age, due to the rapid development of information technology and the widespread use of the Internet in various aspects of life. Cyber crimes include a wide range of illegal activities such as hacking personal accounts, data theft, online fraud, violation of privacy, and the spread of malicious software. The danger of cyber crimes lies in their ease of execution and the difficulty of tracking the perpetrators, in addition to the financial and psychological damage they cause to individuals and institutions. Stolen personal information may lead to significant financial losses and can be used for blackmail or reputation damage. To prevent cyber crimes, several preventive measures should be taken, including using strong and unique passwords, regularly updating software and operating systems, and avoiding suspicious links or unknown attachments. Digital awareness and education about internet risks are also among the most important protection methods, especially for young people. In conclusion, combating cyber crimes requires cooperation between individuals, institutions, and governments by strengthening cyber laws, promoting cybersecurity awareness, and using modern technologies to protect against digital threats.