Discuz默认中没有直接关闭安全提问的地方，如果需要取消，可以按照交易国Discuz小编的方法步骤：

一、Discuz取消登陆页面中的安全提问

查找文件：template正在使用的模板memberlogin.htm  如果你在,正在使用的模版当中没有找到相关文件，就在默认模板default中找，下面以X3.2为例删除第（92行-118行）

    <!--{if empty($_GET['auth']) || $questionexist}-->
                                <div class="rfm">
                                        <table>
                                                <tr>
                                                        <th>{lang security_q}:</th>
                                                        <td><select id="loginquestionid_$loginhash" width="213" name="questionid"{if !$questionexist} onchange="if($('loginquestionid_$loginhash').value > 0) {$('loginanswer_row_$loginhash').style.display='';} else {$('loginanswer_row_$loginhash').style.display='none';}"<!--{/if}-->>
                                                                <option value="0"><!--{if $questionexist}-->{lang security_question_0}<!--{else}-->{lang security_question}<!--{/if}--></option>
                                                                <option value="1">{lang security_question_1}</option>
                                                                <option value="2">{lang security_question_2}</option>
                                                                <option value="3">{lang security_question_3}</option>
                                                                <option value="4">{lang security_question_4}</option>
                                                                <option value="5">{lang security_question_5}</option>
                                                                <option value="6">{lang security_question_6}</option>
                                                                <option value="7">{lang security_question_7}</option>
                                                        <lect></td>
                                                </tr>
                                        </table>
                                </div>
                                <div class="rfm" id="loginanswer_row_$loginhash" {if !$questionexist} style="display:none"{/if}>
                                        <table>
                                                <tr>
                                                        <th>{lang security_a}:</th>
                                                        <td><input type="text" name="answer" id="loginanswer_$loginhash" autocomplete="off" size="30" class="px p_fre" tabindex="1" /></td>
                                                </tr>
                                        </table>
                                </div>
                                <!--{/if}-->

官方演示图： 

删除后演示图：

 二、Discuz取消个人设置页面中的安全提问

查找文件：template正在使用的模板homespacecp_profile.htm 如果你在,正在使用的模版当中没有找到相关文件，就在默认模板default中找，下面以X3.2为例删除第（91行-115行）

     <tr>
                                                <th>{lang security_question}</th>
                                                <td>
                                                        <select name="questionidnew" id="questionidnew">
                                                                <option value="" selected>{lang memcp_profile_security_keep}</option>
                                                                <option value="0">{lang security_question_0}</option>
                                                                <option value="1">{lang security_question_1}</option>
                                                                <option value="2">{lang security_question_2}</option>
                                                                <option value="3">{lang security_question_3}</option>
                                                                <option value="4">{lang security_question_4}</option>
                                                                <option value="5">{lang security_question_5}</option>
                                                                <option value="6">{lang security_question_6}</option>
                                                                <option value="7">{lang security_question_7}</option>
                                                        <lect>
                                                        <p class="d">{lang memcp_profile_security_comment}</p>
                                                </td>
                                        </tr>

                                        <tr>
                                                <th>{lang security_answer}</th>
                                                <td>
                                                        <input type="text" name="answernew" id="answernew" class="px" />
                                                        <p class="d">{lang memcp_profile_security_answer_comment}</p>
                                                </td>
                                        </tr>  

官方演示图： 

删除后演示图：

删除后直接覆盖源代码就可以了，为了防止意外，建议先备份源文件。