We carefully choose which projects to study based on the following criteria:
VHP has data on 1499 vulnerabilities in Chromium.
VHP has data on 178 vulnerabilities in HTTPD.
VHP has data on 157 vulnerabilities in Tomcat.
VHP has data on 52 vulnerabilities in Struts.
VHP has data on 25 vulnerabilities in systemd.
VHP has data on 287 vulnerabilities in FFmpeg.
VHP has data on 80 vulnerabilities in Django.