diff --git a/vector/src/main/java/im/vector/app/core/ui/views/ShieldImageView.kt b/vector/src/main/java/im/vector/app/core/ui/views/ShieldImageView.kt
index 1990859668..6327daec86 100644
--- a/vector/src/main/java/im/vector/app/core/ui/views/ShieldImageView.kt
+++ b/vector/src/main/java/im/vector/app/core/ui/views/ShieldImageView.kt
@@ -45,8 +45,8 @@ class ShieldImageView @JvmOverloads constructor(
             RoomEncryptionTrustLevel.Default -> {
                 contentDescription = context.getString(R.string.a11y_trust_level_default)
                 setImageResource(
-                        if (borderLess) R.drawable.ic_shield_black_no_border
-                        else R.drawable.ic_shield_black
+                        if (borderLess) R.drawable.ic_shield_unknown_no_border
+                        else R.drawable.ic_shield_unknown
                 )
             }
             RoomEncryptionTrustLevel.Warning -> {
@@ -137,7 +137,7 @@ class ShieldImageView @JvmOverloads constructor(
 @DrawableRes
 fun RoomEncryptionTrustLevel.toDrawableRes(): Int {
     return when (this) {
-        RoomEncryptionTrustLevel.Default -> R.drawable.ic_shield_black
+        RoomEncryptionTrustLevel.Default -> R.drawable.ic_shield_unknown
         RoomEncryptionTrustLevel.Warning -> R.drawable.ic_shield_warning
         RoomEncryptionTrustLevel.Trusted -> R.drawable.ic_shield_trusted
         RoomEncryptionTrustLevel.E2EWithUnsupportedAlgorithm -> R.drawable.ic_warning_badge
diff --git a/vector/src/main/res/drawable/ic_shield_unknown.xml b/vector/src/main/res/drawable/ic_shield_unknown.xml
new file mode 100644
index 0000000000..7f5fbc730b
--- /dev/null
+++ b/vector/src/main/res/drawable/ic_shield_unknown.xml
@@ -0,0 +1,20 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:strokeWidth="1"
+      android:pathData="M12.008,23.487C12.005,23.487 12.002,23.488 12,23.489C11.998,23.488 11.995,23.487 11.992,23.487C11.92,23.471 11.813,23.445 11.675,23.409C11.399,23.337 11.002,23.223 10.523,23.058C9.565,22.725 8.292,22.186 7.022,21.361C4.49,19.715 2,16.954 2,12.405V3.45L12,0.521L22,3.45V12.405C22,16.954 19.51,19.715 16.978,21.361C15.708,22.186 14.435,22.725 13.477,23.058C12.998,23.223 12.601,23.337 12.325,23.409C12.187,23.445 12.08,23.471 12.008,23.487Z"
+      android:fillColor="#737D8C"
+      android:strokeColor="#ffffff"/>
+  <path
+      android:strokeWidth="1"
+      android:pathData="M12.008,23.487C12.005,23.487 12.002,23.488 12,23.489C11.998,23.488 11.995,23.487 11.992,23.487C11.92,23.471 11.813,23.445 11.675,23.409C11.399,23.337 11.002,23.223 10.523,23.058C9.565,22.725 8.292,22.186 7.022,21.361C4.49,19.715 2,16.954 2,12.405V3.45L12,0.521L22,3.45V12.405C22,16.954 19.51,19.715 16.978,21.361C15.708,22.186 14.435,22.725 13.477,23.058C12.998,23.223 12.601,23.337 12.325,23.409C12.187,23.445 12.08,23.471 12.008,23.487Z"
+      android:fillColor="#737D8C"
+      android:strokeColor="#ffffff"/>
+  <path
+      android:pathData="M12.003,16.5C12.577,16.5 13.043,16.035 13.043,15.46C13.043,14.887 12.577,14.421 12.003,14.421C11.429,14.421 10.964,14.887 10.964,15.46C10.964,16.035 11.429,16.5 12.003,16.5ZM10.559,9.823C10.559,9.023 11.208,8.379 12.003,8.379C12.795,8.379 13.447,9.031 13.447,9.823C13.447,10.19 13.29,10.321 12.671,10.748C12.398,10.937 12.022,11.2 11.729,11.586C11.416,11.999 11.223,12.513 11.223,13.168H12.783C12.783,12.847 12.868,12.665 12.971,12.528C13.096,12.364 13.276,12.226 13.558,12.031C13.587,12.01 13.618,11.989 13.651,11.967C14.162,11.619 15.006,11.045 15.006,9.823C15.006,8.17 13.656,6.82 12.003,6.82C10.352,6.82 9,8.157 9,9.823H10.559Z"
+      android:fillColor="#ffffff"
+      android:fillType="evenOdd"/>
+</vector>
diff --git a/vector/src/main/res/drawable/ic_shield_unknown_no_border.xml b/vector/src/main/res/drawable/ic_shield_unknown_no_border.xml
new file mode 100644
index 0000000000..89331edf9e
--- /dev/null
+++ b/vector/src/main/res/drawable/ic_shield_unknown_no_border.xml
@@ -0,0 +1,18 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:strokeWidth="1"
+      android:pathData="M12.008,23.487C12.005,23.487 12.002,23.488 12,23.489C11.998,23.488 11.995,23.487 11.992,23.487C11.92,23.471 11.813,23.445 11.675,23.409C11.399,23.337 11.002,23.223 10.523,23.058C9.565,22.725 8.292,22.186 7.022,21.361C4.49,19.715 2,16.954 2,12.405V3.45L12,0.521L22,3.45V12.405C22,16.954 19.51,19.715 16.978,21.361C15.708,22.186 14.435,22.725 13.477,23.058C12.998,23.223 12.601,23.337 12.325,23.409C12.187,23.445 12.08,23.471 12.008,23.487Z"
+      android:fillColor="#737D8C"
+      android:strokeColor="#ffffff"/>
+  <path
+      android:pathData="M1.5,12.405V3.075L12,0L22.5,3.075V12.405C22.5,21.945 12,24 12,24C12,24 1.5,21.945 1.5,12.405Z"
+      android:fillColor="#737D8C"/>
+  <path
+      android:pathData="M12.003,16.5C12.577,16.5 13.043,16.035 13.043,15.46C13.043,14.887 12.577,14.421 12.003,14.421C11.429,14.421 10.964,14.887 10.964,15.46C10.964,16.035 11.429,16.5 12.003,16.5ZM10.559,9.823C10.559,9.023 11.208,8.379 12.003,8.379C12.795,8.379 13.447,9.031 13.447,9.823C13.447,10.19 13.29,10.321 12.671,10.748C12.398,10.937 12.022,11.2 11.729,11.586C11.416,11.999 11.223,12.513 11.223,13.168H12.783C12.783,12.847 12.868,12.665 12.971,12.528C13.096,12.364 13.276,12.226 13.558,12.031C13.587,12.01 13.618,11.989 13.651,11.967C14.162,11.619 15.006,11.045 15.006,9.823C15.006,8.17 13.656,6.82 12.003,6.82C10.352,6.82 9,8.157 9,9.823H10.559Z"
+      android:fillColor="#ffffff"
+      android:fillType="evenOdd"/>
+</vector>