diff --git a/src/config/server.rs b/src/config/server.rs
index 7846183..d543702 100644
--- a/src/config/server.rs
+++ b/src/config/server.rs
@@ -27,6 +27,8 @@ pub struct Config {
     pub id: Option<Id>,
     #[validate(nested)]
     pub file: Option<File>,
+    #[validate(nested)]
+    pub security: Option<Security>,
 }
 
 #[derive(Deserialize, Serialize, Validate, Debug)]
@@ -129,3 +131,29 @@ pub struct File {
     pub proxy_remote_file: Option<bool>,
     pub cache_remote_file: Option<bool>,
 }
+
+#[derive(Deserialize, Serialize, Validate, Debug)]
+pub struct Security {
+    pub require_authorized_fetch: Option<bool>,
+    pub private_mode: Option<bool>,
+    #[validate(nested)]
+    pub captcha: Option<CaptchaConfig>,
+    pub enable_strict_email_check: Option<bool>,
+    pub log_ip_address: Option<bool>,
+}
+
+#[derive(Deserialize, Serialize, Validate, Debug)]
+pub struct CaptchaConfig {
+    pub enabled: bool,
+    pub kind: Captcha,
+    pub site_key: String,
+    pub secret_key: String,
+}
+
+#[derive(Deserialize, Serialize, Debug)]
+pub enum Captcha {
+    #[serde(rename = "hCaptcha")]
+    HCaptcha,
+    #[serde(rename = "reCAPTCHA")]
+    ReCaptcha,
+}