This training course explains the fundamentals of cybersecurity and why protecting organizational information systems is essential for business operations. It describes common threats such as malware, viruses, worms, spyware, phishing, and identity theft, as well as different types of cyberattacks like password attacks and denial-of-service attacks. The course also outlines practical prevention strategies, including strong passwords, two-factor authentication, cautious downloading, and verifying website legitimacy. It highlights the importance of mobile security, social media safety, and prevention software such as firewalls, VPNs, and antivirus programs. Finally, it covers advanced threats like cyberterrorism, cyber warfare, and cyber espionage, and explains defensive tools such as encryption, intrusion detection, and digital forensics.