Added pentesting

Author: teon

src/pages/security.astro

@@ -158,6 +158,10 @@ const tags = [
     <FlexibleSection leftRatio={1} title="We are open!" theme="light">
       <div slot="left">
         <ul>
+          <li>As far as we know, we are the only VPN solution that publishes 
+          <a href="https://defguard.net/pentesting/">detailed penetration testing reports 
+          from periodic security audits</a> conducted by ISEC on all Defguard components.
+          </li>
           <li>
             Most of our code is open source, and the enterprise part is open code —
             enabling you to freely test and verify.