Added a note on compression

diff --git a/doc/cha-intro-tls.texi b/doc/cha-intro-tls.texi
index 88ca94cb608bdf37c90f440512973d49ce6c0345..07ba8973934faf17bec6785f8dbb3d1c0c38d2e4 100644 (file)
--- a/doc/cha-intro-tls.texi
+++ b/doc/cha-intro-tls.texi
@@ -188,6 +188,9 @@ on @xcite{RFC3749}. The supported algorithms are shown below.
 
 @showenumdesc{gnutls_compression_method_t,Supported compression algorithms}
 
+Note that compression enables attacks such as traffic analysis, or even
+plaintext recovery under certain circumstances.
+
 @node Weaknesses and countermeasures
 @subsection Weaknesses and countermeasures