This report analyzes the Capital One data breach that occurred in July 2019, where hackers exploited a web application firewall vulnerability, compromising the data of over 100 million users. The compromised data included names, dates of birth, email addresses, and self-reported income ranges. The report highlights the importance of cloud network scrutiny and the need for proper assessment of internally hosted servers and patches. Capital One's response, including investments in cybersecurity, traffic analysis, and free credit monitoring, is examined. The analysis reveals a lack of network tracking and emphasizes the need for enhanced research and development in network security. Recommendations include implementing traffic analysis and ensuring firewall updates. The report references several sources, including articles and research papers, to support its findings and recommendations, providing a comprehensive overview of the incident and its implications for data security.