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Introduction to Web Application Security Professor Larry Heimann Web Application Security Information Systems Course Business Course site: http://67327.cmuis.net Schedule Reading Assignments in-class labs -- laptops w/ 272

Introduction to Web Application Security Professor Larry Heimann Web Application Security Information Systems
Course Business • Course site: http://67327.cmuis.net • Schedule • Reading • Assignments • in-class labs -- laptops w/ 272 technology required • summary exercise -- no collaboration at all • final exam • O ffi ce Hours
The Bad News (2014) 78% of enterprises faced cyber attacks 69% of attacks on web applications Sadly, most companies spend more on co ff ee than they do on web application security.
Problems Reported to Apple 155 web app security problems reported to Apple in past 12 months Breakdown of issues: • 83 cross-site scripting (XSS) • 12 information disclosure • 10 injection-related • 12 server configuration • 2 path traversals • 1 cross-site request forgery
OWASP Top Ten Threats 2013 A1: Injection A2: Broken Authentication and Session Management A3: Cross-Site Scripting (XSS) A4: Insecure Direct Object References A5: Security Misconfiguration A6: Sensitive Data Exposure A7: Missing Function Level Access Control A8: Cross-Site Request Forgery (CSRF) A9: Using Components with Known Vulnerabilities A10: Unvalidated Redirects and Forwards
Key Lessons 1. Web application security is hard 2. Securing web applications is a never-ending battle 3. Admit mistakes and quickly correct them 4. Some threats are worse than others 5. Simple threats can still be deadly
“You cannot defend against threats you cannot see.” -- Mr. H, chess coach “You cannot defend against threats you cannot see.” -- Prof. H, 67-327
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