In today’s highly interconnected world, cyberspace has become an essential platform for communication, commerce, and information exchange. However, this reliance on digital technologies has also exposed individuals, organizations, and governments to a wide array of security threats. The most common security issues in cyberspace can be categorized into several key areas, each posing significant risks to confidentiality, integrity, and availability of information. Understanding these issues is critical for ensuring safety and security in facilities, especially those that handle sensitive or critical data. One of the most pervasive security threats in cyberspace is malware attacks. Malware, or malicious software, includes viruses, worms, trojans, ransomware, spyware, and adware. These programs are designed to infiltrate computer systems and networks, often without the user’s knowledge, causing damage or stealing sensitive data. For example, ransomware encrypts files and demands payment for decryption, which can paralyze organizational operations. Trojans may appear as legitimate software but secretly grant attackers unauthorized access to systems. The increasing sophistication of malware, coupled with social engineering techniques that trick users into executing malicious code, makes malware a persistent concern for digital security. Another major issue is phishing attacks, which exploit human vulnerabilities rather than technical weaknesses. Phishing involves fraudulent attempts to obtain sensitive information, such as usernames, passwords, or credit card details, by pretending to be a trustworthy entity. These attacks are commonly executed via emails, fake websites, or instant messages. Spear-phishing, a more targeted variant, customizes messages for specific individuals or organizations, increasing the likelihood of success. Even