As the digital world evolves, so does the risk of cyberattacks. Despite technology playing a vital role in nullifying these threats, the human factor is still regarded as one of the greatest weaknesses. End-user behavior is a major cause of information security breaches. This quantitative empirical study used a single-group, pre-post-test, descriptive, correlative design that analyzed participants knowledge, attitude, and self-reported behavior focused on seven areas: mobile computing, information handling, incident reporting, password management, social media use, e-mail use, and Internet use using the Human Aspects of Information Security Questionnaire (HAIS-Q). To determine its effectiveness, the research sought to uncover the connection between customized security awareness training and participant cybersecurity knowledge, attitude, and self-reported behavior. The results highlight the importance of cybersecurity awareness training tailored to reduce human fallibility by addressing individual user differences. Feedback is provided on developing training programs that encourage a culture of security awareness and provide actionable tips for successful implementation. This study contributes valuable knowledge and insights to the field of cybersecurity. Acknowledging and addressing the human element can help limit the threat of data breaches as we continue to live more and more digitally. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]