diff --git a/content/posts/linux/Slightly Improving Mailcow Security.md b/content/posts/linux/Slightly Improving Mailcow Security.md
index 26ffcea..f91409a 100644
--- a/content/posts/linux/Slightly Improving Mailcow Security.md	
+++ b/content/posts/linux/Slightly Improving Mailcow Security.md	
@@ -98,3 +98,7 @@ If you do not use Gravatar with SOGo, you can also set COEP to require-corp sinc
 ```
 add_header Cross-Origin-Embedder-Policy require-corp;
 ```
+
+### GZIP Compression
+
+Disable gzip compression to avoid the BREACH attack. Change `gzip on;` to `gzip off;`.
\ No newline at end of file