Note LF Training's digital badge

Signed-off-by: David A. Wheeler <[email protected]>

secure_software_development_fundamentals.md

@@ -145,7 +145,7 @@ Our primary concern is that you learn how to develop *secure* software. Here are
 
 3. **Open Content**. The main informational material is not just “free” in the sense of “no cost” but also in terms of freedom. In particular, the informational content is released under the [Creative Commons Attribution License (CC-BY) version 4.0](https://creativecommons.org/licenses/by/4.0/), so you can reuse it in many ways. We *want* you to use this information! There are some exceptions; we quote other material (such as from xkcd) which are under their own licenses.
 
-4. **Evidence of Completion**. If you want to prove that you learned the material (as opposed to simply seeing some text), that is available. On edX this is available at a nominal price by enrolling in a verified track. This might really help you communicate what you know to employers, customers, or potential employers. By comparison, just owning a book doesn’t prove that you have read or understood it.
+4. **Evidence of Completion**. If you want to prove that you learned the material (as opposed to simply seeing some text), that is available. On edX this is available at a nominal price by enrolling in a verified track. On the Linux Foundation training platform you can try to pass a final exam to complete the course and obtain a certificate of completion that also gives a digital badge; you can share that via social media, including your LinkedIn profile. This might really help you communicate what you know to employers, customers, or potential employers. By comparison, just owning a book doesn’t prove that you have read or understood it.
 
 5. **Accessibility**. We have worked to make this information accessible. We want to make sure that those who are blind, have low vision, color-blindness, and so on can learn from this material.