title: URL Vulnerabilities
body: <p>I'm researching URLs that I'm building against the unique URL that google docs create once you select and send a URL to anyone.</p>
  <p>My URL looks like: <code>https://example.com/?doc=abcd123)</code></p>
  <ul>
  <li>Should I encode the variable doc in base64? Should it betoken alike</li>
  <li>wherewith the id and a key that the other end needs to decrypt?</li>
  <li>Whatis The security issue we are vulnerable to?</li>
  <li>How exactly can an attacker exploit this vulnerability?</li>
  <li>What do we need to do to fix the vulnerability?</li>
  </ul>