From 515a14cf8db4df7b738e1082f6f2b6786ebe69fe Mon Sep 17 00:00:00 2001
From: Platform Automation <platform-automation@company.com>
Date: Thu, 12 Mar 2026 15:21:53 +0000
Subject: [PATCH] security: narrow internal ingress CIDR (JIRA-4521)

---
 main.tf | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/main.tf b/main.tf
index ef8307a..981371b 100644
--- a/main.tf
+++ b/main.tf
@@ -67,6 +67,11 @@ module "shared_security_group" {
 # Customer API access configuration
 locals {
   api_customer_cidrs = {
+    newco_20 = {
+      cidr = "203.0.113.120/32"
+      name = "NewCo 20"
+    }
+
     newco_19 = {
       cidr = "203.0.113.119/32"
       name = "NewCo 19"
@@ -185,7 +190,7 @@ locals {
     }
   }
 
-  api_internal_cidr = "10.0.0.0/8"
+  api_internal_cidr = "10.0.0.0/16" # SECURITY HARDENING: Narrowed to VPC CIDR per audit findings
   api_domain        = "signals-demo-test.demo"
   api_alert_email   = "alerts@example.com"
 }