 to be
problematic and is now removed in CodeIgniter 3.0.</p>
<p>If your application has relied on this feature, you should update it to
filter URI segments through <code class="docutils literal"><span class="pre">$this-&gt;security-&gt;xss_clean()</span></code> whenever you
output them.</p>
</div>
<div class="section" id="step-13-check-for-usage-of-the-xss-clean-form-validation-rule">
<h2>Step 13: Check for usage of the ‘xss_clean’ Form validation rule<a class="headerlink" href="#step-13-check-for-usag