Include more information on how CSRF cookies work.

diff --git a/privacy.html b/privacy.html
index 5771ab6bbd6ab59b67f9374af69578a60606be1d..5ce78abdbd43b17a6204a89cedf50c399564971d 100644 (file)
--- a/privacy.html
+++ b/privacy.html
@@ -50,28 +50,30 @@
         We don't use cookies or anything like cookies to track you.
       </p>
       <p>
-        We use <em>extremely</em> short-lived cookies to prevent
-        request forgery. These don't contain any identifying
-        information and they self-destruct after a few seconds.
+        We use cookies to prevent request forgery. These don't contain
+        any identifying information. These <a href="https://www.owasp.org/index.php/Cross-Site_Request_Forgery_%28CSRF%29_Prevention_Cheat_Sheet#Double_Submit_Cookies">double-submit cookies</a>,
+        are random cookies that reset each time you visit the page.
+        This prevents another site from tricking you into submitting
+        data to our site, because they can't read the random value in
+        the cookie.
       </p>
       <p>
-        For long-term data we use HTML5
+        For long-term data storage we use HTML5
         <a href="http://diveintohtml5.info/storage.html">localStorage</a>
         and other similar <em>client-side storage</em>. This gives you
-        the benefits of cookies, plus your data is never sent to the
+        the benefits of cookies, but your data is never sent to the
         server, so there's nothing to secure.
       </p>
       <h3>Security</h3>
       <p>
-        We don't track any user data via this site, so we have no
+        We don't track any personal data via this site, so we have no
         special databases to secure.
       </p>
       <p>
-        If you are concerned about your connection being intercepted
-        by someone else, <a href="https://yukkurigames.com/">we offer
-        HTTPS for our main domain</a>. We would like to offer it
-        for more, but the CA racket means we can't afford it.
-        In the future we hope CAs are replaced by something like
+        Our primary site, which you are reading now, is served
+        exclusively via HTTPS. We would like to offer HTTPS for all
+        our subdomains, but the CA racket means we can't afford it. In
+        the future we hope CAs are replaced by something like
         <a href="http://convergence.io/">Convergence</a> so cheap
         security is available for everyone, but right now it doesn't
         work reliably.