diff --git a/README.md b/README.md
index f894e0f..3cbe879 100644
--- a/README.md
+++ b/README.md
@@ -154,3 +154,12 @@ python3 tox-irc-sync.py \
    which would broaden the range of callbacks that could be supported.
 3. It could be a gateway to an existing NGC group with an invite bot.
 
+## Updates
+
+Although Tox works over Tor, we do not recommend its usage for
+anonymity as it leaks DNS requests due to a 6-year old known security
+issue: https://github.com/TokTok/c-toxcore/issues/469 Do not use it for
+anonymous communication unless you have a TCP and UDP firewall in place.
+
+Up-to-date code is on https://git.plastiras.org/emdee/tox_irc_sync
+