Explore web application security in this Black Hat USA 2004 conference talk focusing on session strength. Delve into various aspects of session management, including session states, tokens, and potential threats. Examine key spaces, password security, and session attacks. Learn about token creation, dynamic tokens, and user number tokens. Investigate the "Lucky Monkey" concept and its values. Analyze HTTP requests, confidentiality, and encoding techniques. Gain insights into session management best practices, phase space analysis, and key management. Discover how different web servers and programming languages like PHP and Java handle session tokens and cookies. Understand the importance of session expiration and modeling user behavior. Conclude with a comprehensive overview of data security in web applications.