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<h2><em>#4</em> Explain the pitfalls</h2>
- <p>Remind participants that encryption works only when it's explicitly used; they won't be able to send an encrypted email to someone who hasn't already set up encryption. Also remind participants to double-check the encryption icon before hitting send, and that subjects and timestamps are never encrypted. See Email Self-Defense's Security Tips subsection for more information.</p>
+ <p>Remind participants that encryption works only when it's explicitly used; they won't be able to send an encrypted email to someone who hasn't already set up encryption. Also remind participants to double-check the encryption icon before hitting send, and that subjects and timestamps are never encrypted. See the guide's <a href="index.html#step-headers_unencrypted">Security Tips</a> subsection for more information.</p>
<p>Advocate for free software, because without it, we can't <a href="https://www.fsf.org/bulletin/2013/fall/how-can-free-software-protect-us-from-surveillance">meaningfully resist invasions of our digital privacy and autonomy</a>. Explain the <a href="https://www.gnu.org/proprietary/proprietary.html">dangers of running a proprietary system</a>, and why GnuPG <a href="https://www.gnu.org/philosophy/proprietary-surveillance.html">can't begin to mitigate them</a>.</p>