diff --git a/backend/library/libraries/critical_matrix_3x3.yaml b/backend/library/libraries/critical_matrix_3x3.yaml
index 33cc3d15c..992b7d49d 100644
--- a/backend/library/libraries/critical_matrix_3x3.yaml
+++ b/backend/library/libraries/critical_matrix_3x3.yaml
@@ -8,50 +8,63 @@ provider: intuitem
 packager: intuitem
 objects:
   risk_matrix:
-  - urn: urn:intuitem:risk:matrix:critical_risk_matrix_3x3
-    ref_id: critical_3x3
-    name: critical 3x3
-    description: critical risk matrix 3x3
-    probability:
-    - abbreviation: L
-      name: Low
-      description: Unfrequent event
-    - abbreviation: M
-      name: Medium
-      description: Occasional event
-    - abbreviation: H
-      name: High
-      description: Frequent event
-    impact:
-    - abbreviation: L
-      name: Low
-      description: Low impact
-    - abbreviation: M
-      name: Medium
-      description: Medium impact
-    - abbreviation: H
-      name: High
-      description: High impact
-    risk:
-    - abbreviation: L
-      name: Low
-      description: acceptable risk
-      hexcolor: "#00FF00"
-    - abbreviation: M
-      name: Medium
-      description: risk requiring mitigation within 2 years
-      hexcolor: "#FFFF00"
-    - abbreviation: H
-      name: High
-      description: unacceptable risk
-      hexcolor: "#FF0000"
-    grid:
-    - - 0
-      - 1
-      - 1
-    - - 1
-      - 1
-      - 2
-    - - 1
-      - 2
-      - 2
+    - urn: urn:intuitem:risk:matrix:critical_risk_matrix_3x3
+      ref_id: critical_3x3
+      name: critical 3x3
+      description: critical risk matrix 3x3
+      probability:
+        - abbreviation: L
+          name: Low
+          description: Unfrequent event
+        - abbreviation: M
+          name: Medium
+          description: Occasional event
+        - abbreviation: H
+          name: High
+          description: Frequent event
+      impact:
+        - abbreviation: L
+          name: Low
+          description: Low impact
+        - abbreviation: M
+          name: Medium
+          description: Medium impact
+        - abbreviation: H
+          name: High
+          description: High impact
+      risk:
+        - abbreviation: L
+          name: Low
+          description: acceptable risk
+          hexcolor: "#00FF00"
+        - abbreviation: M
+          name: Medium
+          description: risk requiring mitigation within 2 years
+          hexcolor: "#FFFF00"
+        - abbreviation: H
+          name: High
+          description: unacceptable risk
+          hexcolor: "#FF0000"
+      grid:
+        - - 0
+          - 1
+          - 1
+        - - 1
+          - 1
+          - 2
+        - - 1
+          - 2
+          - 2
+      strength_of_knowledge:
+        - name: Low
+          description: Low strength of knowledge
+          symbol: ◔
+        - name: Medium
+          description: Medium strength of knowledge
+          symbol: ◑
+        - name: High
+          description: High strength of knowledge
+          symbol: ◕
+        - name: Very high
+          description: Very high strength of knowledge
+          symbol: ●
diff --git a/backend/library/libraries/critical_matrix_5x5.yaml b/backend/library/libraries/critical_matrix_5x5.yaml
index c44d2d997..460189d43 100644
--- a/backend/library/libraries/critical_matrix_5x5.yaml
+++ b/backend/library/libraries/critical_matrix_5x5.yaml
@@ -8,86 +8,99 @@ provider: intuitem
 packager: intuitem
 objects:
   risk_matrix:
-  - urn: urn:intuitem:risk:matrix:critical_risk_matrix_5x5
-    ref_id: critical_5x5
-    name: critical 5x5
-    description: critical risk matrix 5x5
-    probability:
-    - abbreviation: VL
-      name: Very Low
-      description: Very unfrequent event
-    - abbreviation: L
-      name: Low
-      description: Unfrequent event
-    - abbreviation: M
-      name: Medium
-      description: Occasional event
-    - abbreviation: H
-      name: High
-      description: Frequent event
-    - abbreviation: VH
-      name: Very High
-      description: Very frequent event
-    impact:
-    - abbreviation: VL
-      name: Very Low
-      description: Very low impact
-    - abbreviation: L
-      name: Low
-      description: Low impact
-    - abbreviation: M
-      name: Medium
-      description: Medium impact
-    - abbreviation: H
-      name: High
-      description: High impact
-    - abbreviation: VH
-      name: Very High
-      description: Very high impact
-    risk:
-    - abbreviation: VL
-      name: Very Low
-      description: negligible risk
-      hexcolor: "#BBF7D0"
-    - abbreviation: L
-      name: Low
-      description: acceptable risk
-      hexcolor: "#BEF264"
-    - abbreviation: M
-      name: Medium
-      description: risk requiring mitigation within 2 years
-      hexcolor: "#FEF08A"
-    - abbreviation: H
-      name: High
-      description: risk requiring mitigation within 6 months
-      hexcolor: "#FBBF24"
-    - abbreviation: VH
-      name: Very High
-      description: unacceptable risk
-      hexcolor: "#F87171"
-    grid:
-    - - 0
-      - 0
-      - 1
-      - 1
-      - 2
-    - - 0
-      - 1
-      - 1
-      - 2
-      - 2
-    - - 1
-      - 1
-      - 2
-      - 2
-      - 3
-    - - 1
-      - 2
-      - 2
-      - 3
-      - 4
-    - - 2
-      - 2
-      - 3
-      - 4
-      - 4
+    - urn: urn:intuitem:risk:matrix:critical_risk_matrix_5x5
+      ref_id: critical_5x5
+      name: critical 5x5
+      description: critical risk matrix 5x5
+      probability:
+        - abbreviation: VL
+          name: Very Low
+          description: Very unfrequent event
+        - abbreviation: L
+          name: Low
+          description: Unfrequent event
+        - abbreviation: M
+          name: Medium
+          description: Occasional event
+        - abbreviation: H
+          name: High
+          description: Frequent event
+        - abbreviation: VH
+          name: Very High
+          description: Very frequent event
+      impact:
+        - abbreviation: VL
+          name: Very Low
+          description: Very low impact
+        - abbreviation: L
+          name: Low
+          description: Low impact
+        - abbreviation: M
+          name: Medium
+          description: Medium impact
+        - abbreviation: H
+          name: High
+          description: High impact
+        - abbreviation: VH
+          name: Very High
+          description: Very high impact
+      risk:
+        - abbreviation: VL
+          name: Very Low
+          description: negligible risk
+          hexcolor: "#BBF7D0"
+        - abbreviation: L
+          name: Low
+          description: acceptable risk
+          hexcolor: "#BEF264"
+        - abbreviation: M
+          name: Medium
+          description: risk requiring mitigation within 2 years
+          hexcolor: "#FEF08A"
+        - abbreviation: H
+          name: High
+          description: risk requiring mitigation within 6 months
+          hexcolor: "#FBBF24"
+        - abbreviation: VH
+          name: Very High
+          description: unacceptable risk
+          hexcolor: "#F87171"
+      grid:
+        - - 0
+          - 0
+          - 1
+          - 1
+          - 2
+        - - 0
+          - 1
+          - 1
+          - 2
+          - 2
+        - - 1
+          - 1
+          - 2
+          - 2
+          - 3
+        - - 1
+          - 2
+          - 2
+          - 3
+          - 4
+        - - 2
+          - 2
+          - 3
+          - 4
+          - 4
+      strength_of_knowledge:
+        - name: Low
+          description: Low strength of knowledge
+          symbol: ◔
+        - name: Medium
+          description: Medium strength of knowledge
+          symbol: ◑
+        - name: High
+          description: High strength of knowledge
+          symbol: ◕
+        - name: Very high
+          description: Very high strength of knowledge
+          symbol: ●