diff --git a/newsfragments/3819.security b/newsfragments/3819.security
new file mode 100644
index 000000000..975fd0035
--- /dev/null
+++ b/newsfragments/3819.security
@@ -0,0 +1 @@
+The introducer server no longer writes the sensitive introducer fURL value to its log at startup time.  Instead it writes the well-known path of the file from which this value can be read.
diff --git a/src/allmydata/introducer/server.py b/src/allmydata/introducer/server.py
index 1e28f511b..aa0ae8336 100644
--- a/src/allmydata/introducer/server.py
+++ b/src/allmydata/introducer/server.py
@@ -136,7 +136,7 @@ class _IntroducerNode(node.Node):
             os.rename(old_public_fn, private_fn)
         furl = self.tub.registerReference(introducerservice,
                                           furlFile=private_fn)
-        self.log(" introducer is at %s" % furl, umid="qF2L9A")
+        self.log(" introducer can be found in {!r}".format(private_fn), umid="qF2L9A")
         self.introducer_url = furl # for tests
 
     def init_web(self, webport):
diff --git a/src/allmydata/test/test_download.py b/src/allmydata/test/test_download.py
index d61942839..8e7aa9d27 100644
--- a/src/allmydata/test/test_download.py
+++ b/src/allmydata/test/test_download.py
@@ -493,7 +493,7 @@ class DownloadTest(_Base, unittest.TestCase):
         d.addCallback(_done)
         return d
 
-    def test_simultaneous_onefails_onecancelled(self):
+    def test_simul_1fail_1cancel(self):
         # This exercises an mplayer behavior in ticket #1154. I believe that
         # mplayer made two simultaneous webapi GET requests: first one for an
         # index region at the end of the (mp3/video) file, then one for the