added index

Author: CvH

docs/learn/index.md

@@ -37,6 +37,14 @@ hide:
          </div>
          <p class="feature-paragraph">Driven by innovation, the Polygon type 1 prover is fully Ethereum equivalent.</p>
       </a>
+   </div>
+   <div class="grid-item">
+      <a href="./security/overview">
+         <div class="product-list-item-header">
+            <div class="feature-card-heading">Polygon security</div>
+         </div>
+         <p class="feature-paragraph">Polygon security, bug bounties, and more.</p>
+      </a>      
    </div>
     <div class="grid-item">
       <a href="./plonky">

mkdocs.yml

@@ -572,6 +572,21 @@ nav:
       - Plonky 2 & 3: learn/plonky.md
       - Polygon protocols: learn/polygon-protocols.md
       - Demystifying reorgs: https://polygon.technology/blog/reorgs-demystified-insights-from-monitoring-with-a-sensor-network
+      - Security:
+          - Overview: learn/security/overview.md
+          - Security areas:
+            - Governance & management: learn/security/governance.md
+            - Risk management: learn/security/risk.md
+            - Human resources: learn/security/hr.md
+            - Infrastructure: learn/security/infrastructure.md
+            - Software development: learn/security/sdlc.md
+            - Smart contracts: learn/security/smartcontracts.md
+            - Vulnerability management: learn/security/vulnerability.md
+            - Security operations: learn/security/operations.md
+          - Security reports: learn/security/reports.md
+          - Bug bounty programs: learn/security/bugbounty.md
+          - Responsable disclosure: learn/security/disclosure.md
+          - Contact us: learn/security/contact.md
 
 extra:
   generator: false