New Version of OWASP Top 10 - 2013 released

This version was updated based on numerous comments received during the comment period after the release candidate was released in Feb. 2013.

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 Known Vulnerable Components
A10 Unvalidated Redirects and Forwards

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.

Introduction

The OWASP Top Ten provides 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. Versions of the 2007 and 2010 version were translated into English, French, Spanish, Japanese, Korean and Turkish and other languages. Translation efforts for the 2013 version are underway and they will be posted as they become available.

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.

Changes between 2010 and 2013 Editions

The OWASP Top 10 - 2013 includes the following changes as compared to the 2010 edition:

A1 Injection
A2 Broken Authentication and Session Management (was formerly 2010-A3)
A3 Cross-Site Scripting (XSS) (was formerly 2010-A2)
A4 Insecure Direct Object References
A5 Security Misconfiguration (was formerly 2010-A6)
A6 Sensitive Data Exposure (2010-A7 Insecure Cryptographic Storage and 2010-A9 Insufficient Transport Layer Protection were merged to form 2013-A6)
A7 Missing Function Level Access Control (renamed/broadened from 2010-A8 Failure to Restrict URL Access)
A8 Cross-Site Request Forgery (CSRF) (was formerly 2010-A5)
A9 Using Known Vulnerable Components (new but was part of 2010-A6 – Security Misconfiguration)
A10 Unvalidated Redirects and Forwards