From 711b109246dc7d7e3881ccf70dce4adceefb4b02 Mon Sep 17 00:00:00 2001
From: Joel Challis
Date: Sun, 29 Jun 2025 02:29:33 +0100
Subject: Mitigate VIA keylogger security issues (#25414)

Co-authored-by: Nick Brassel <nick@tzarc.org>---
 quantum/via.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'quantum')

diff --git a/quantum/via.c b/quantum/via.c
index 3682b4ab2b..9446811af6 100644
--- a/quantum/via.c
+++ b/quantum/via.c
@@ -22,6 +22,10 @@
 #    error "DYNAMIC_KEYMAP_ENABLE is not enabled"
 #endif
 
+#ifdef VIA_INSECURE
+#    pragma message "VIA_INSECURE is enabled - firmware is susceptible to keyloggers"
+#endif
+
 #include "via.h"
 
 #include "raw_hid.h"
@@ -318,7 +322,11 @@ void raw_hid_receive(uint8_t *data, uint8_t length) {
                     uint8_t rows   = 28 / ((MATRIX_COLS + 7) / 8);
                     uint8_t i      = 2;
                     for (uint8_t row = 0; row < rows && row + offset < MATRIX_ROWS; row++) {
+#ifdef VIA_INSECURE
                         matrix_row_t value = matrix_get_row(row + offset);
+#else
+                        matrix_row_t value = 0;
+#endif
 #if (MATRIX_COLS > 24)
                         command_data[i++] = (value >> 24) & 0xFF;
 #endif
-- 
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