The OWASP Top 10 Project

The OWASP Top Ten is a powerful awareness document for web application security. The OWASP Top Ten represents a broad consensus about what the most critical web application security flaws are. Project members include a variety of security experts from around the world who have shared their expertise to produce this list.

We urge all companies to adopt this awareness document within their organization and start the process of ensuring that their web applications do not contain these flaws. Adopting the OWASP Top Ten is perhaps the most effective first step towards changing the software development culture within your organization into one that produces secure code.

The OWASP Top 10 - 2013 is as follows:

• 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

The Open Web Application Security Project (OWASP) is an open community dedicated to enabling organizations to develop, purchase, and maintain applications that can be trusted. At OWASP you'll find free and open …

The OWASP Top 10 2013 PDF document

The OWASP Top 10 2013 PDF document (Arabic)

All of the OWASP tools, documents, forums, and chapters are free and open to anyone interested in improving application security. We advocate approaching application security as a people, process, and technology problem, because the most effective approaches to application security require improvements in all of these areas.

OWASP is a new kind of organization. Our freedom from commercial pressures allows us to provide unbiased, practical, cost-effective information about application security. OWASP is not affiliated with any technology company, although we support the informed use of commercial security technology. Similar to many open source software projects, OWASP produces many types of materials in a collaborative, open way.

The OWASP Foundation is the non-profit entity that ensures the project's long-term success. Almost everyone associated with OWASP is a volunteer, including the OWASP Board, Global Committees, Chapter Leaders, Project Leaders, and project members. We support innovative security research with grants and infrastructure.

If you are interested, the methodology for how the Top 10 is produced is now documented here: OWASP Top 10 Development Methodology

Please help us make sure every developer in the ENTIRE WORLD knows about the OWASP Top 10 by helping to spread the word!!!

As you help us spread the word, please emphasize:

• OWASP is reaching out to developers, not just the application security community
• The Top 10 is about managing risk, not just avoiding vulnerabilities
• To manage these risks, organizations need an application risk management program, not just awareness training, app testing, and remediation

We need to encourage organizations to get off the penetrate and patch mentality. As Jeff Williams said in his 2009 OWASP AppSec DC Keynote: "we'll never hack our way secure – it's going to take a culture change" for organizations to properly address application security.