Update Stephen-de-Vries.md
Update Stephen-de-Vries.md
talargoni/owasp-summit-2017,OWASP/owasp-summit-2017,OWASP/owasp-summit-2017,mkasmani/owasp-devseccon-summit,talargoni/owasp-summit-2017,mkasmani/owasp-devseccon-summit,talargoni/owasp-summit-2017,OWASP/owasp-summit-2017,OWASP/owasp-summit-2017,mkasmani/owasp-devseccon-summit,mkasmani/owasp-devseccon-summit