OWASP® Foundation | 278,818 followers on LinkedIn. Every vibrant technology marketplace needs an unbiased source of information. OWASP is synonymous with AppSec. | The Open Worldwide Application Security Project (OWASP) is a worldwide free and open community focused on improving the security of software. Our mission is to make application security "visible,"​ so that people and organizations can make informed decisions about application security risks. Everyone is free to participate in OWASP and all of our materials are available under a free and open software license.