The Open Web Application Security Project (OWASP) is a non-profit that focuses on web security research, training, and documentation to help developers make the world a safer place. They regularly collate application security risks seen in the wild and publish a list of the most frequently encountered issues. This list, the OWASP Top Ten, is a common tool used by developers and security auditors alike to gauge the level of security maturity of a project or the team maintaining it.