diff --git a/.vimrc b/.vimrc
index b802c908f2..d8020f3404 100644
--- a/.vimrc
+++ b/.vimrc
@@ -1,4 +1,8 @@
 " 'set exrc' in ~/.vimrc will read .vimrc from the current directory
+" Warning: Enabling exrc is dangerous! You can do nearly everything from a
+" vimrc configuration file, including write operations and shell execution.
+" You should consider setting 'set secure' as well, which is highly
+" recommended!
 set tabstop=8
 set shiftwidth=8
 set expandtab