Update note section with CTA to whitepaper

doc/user/application_security/dast/index.md

@@ -3,6 +3,11 @@
 > [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/issues/4348)
 in [GitLab Ultimate](https://about.gitlab.com/pricing/) 10.4.
+NOTE: **4 of the top 6 attacks were application based.**
+Download our whitepaper,
+["A Seismic Shift in Application Security"](https://about.gitlab.com/resources/whitepaper-seismic-shift-application-security/)
+to learn how to protect your organization.
+
 Running [static checks](../sast/index.md) on your code is the first step to detect
 vulnerabilities that can put the security of your code at risk. Yet, once
 deployed, your application is exposed to a new category of possible attacks,