diff --git a/htdocs/public/payment/newpayment.php b/htdocs/public/payment/newpayment.php
index 11ad7b554e2..65e689d3585 100644
--- a/htdocs/public/payment/newpayment.php
+++ b/htdocs/public/payment/newpayment.php
@@ -948,7 +948,7 @@ if ($source == 'order')
 	$directdownloadlink = $order->getLastMainDocLink('commande');
 	if ($directdownloadlink)
 	{
-		print '<br><a href="'.$directdownloadlink.'">';
+		print '<br><a href="'.$directdownloadlink.'" rel="nofollow noopener">';
 		print img_mime($order->last_main_doc, '');
 		print $langs->trans("DownloadDocument").'</a>';
 	}
diff --git a/htdocs/public/ticket/create_ticket.php b/htdocs/public/ticket/create_ticket.php
index bd7b5416efb..1c81faca1ad 100644
--- a/htdocs/public/ticket/create_ticket.php
+++ b/htdocs/public/ticket/create_ticket.php
@@ -222,7 +222,7 @@ if (empty($reshook) && $action == 'create_ticket' && GETPOST('add', 'alpha')) {
 				$message .= $langs->transnoentities('TicketNewEmailBodyInfosTicket').'<br>';
 
 				$url_public_ticket = ($conf->global->TICKET_URL_PUBLIC_INTERFACE ? $conf->global->TICKET_URL_PUBLIC_INTERFACE.'/' : dol_buildpath('/public/ticket/view.php', 2)).'?track_id='.$object->track_id;
-				$infos_new_ticket = $langs->transnoentities('TicketNewEmailBodyInfosTrackId', '<a href="'.$url_public_ticket.'">'.$object->track_id.'</a>').'<br>';
+				$infos_new_ticket = $langs->transnoentities('TicketNewEmailBodyInfosTrackId', '<a href="'.$url_public_ticket.'" rel="nofollow noopener">'.$object->track_id.'</a>').'<br>';
 				$infos_new_ticket .= $langs->transnoentities('TicketNewEmailBodyInfosTrackUrl').'<br><br>';
 
 				$message .= $infos_new_ticket;
@@ -272,7 +272,7 @@ if (empty($reshook) && $action == 'create_ticket' && GETPOST('add', 'alpha')) {
 
 					$message_admin .= '</ul>';
 					$message_admin .= '<p>'.$langs->trans('Message').' : <br>'.$object->message.'</p>';
-					$message_admin .= '<p><a href="'.dol_buildpath('/ticket/card.php', 2).'?track_id='.$object->track_id.'">'.$langs->trans('SeeThisTicketIntomanagementInterface').'</a></p>';
+					$message_admin .= '<p><a href="'.dol_buildpath('/ticket/card.php', 2).'?track_id='.$object->track_id.'" rel="nofollow noopener">'.$langs->trans('SeeThisTicketIntomanagementInterface').'</a></p>';
 
 					$from = $conf->global->MAIN_INFO_SOCIETE_NOM.' <'.$conf->global->TICKET_NOTIFICATION_EMAIL_FROM.'>';
 					$replyto = $from;
diff --git a/htdocs/public/ticket/index.php b/htdocs/public/ticket/index.php
index 2455e04797a..b3e8a5e237e 100644
--- a/htdocs/public/ticket/index.php
+++ b/htdocs/public/ticket/index.php
@@ -71,9 +71,9 @@ llxHeaderTicket($langs->trans("Tickets"), "", 0, 0, $arrayofjs, $arrayofcss);
 print '<div class="ticketpublicarea">';
 print '<p style="text-align: center">'.($conf->global->TICKET_PUBLIC_TEXT_HOME ? $conf->global->TICKET_PUBLIC_TEXT_HOME : $langs->trans("TicketPublicDesc")).'</p>';
 print '<div class="ticketform">';
-print '<a href="create_ticket.php" class="butAction marginbottomonly"><div class="index_create bigrounded"><span class="fa fa-plus-circle valignmiddle btnTitle-icon"></span><br>'.dol_escape_htmltag($langs->trans("CreateTicket")).'</div></a>';
-print '<a href="list.php" class="butAction marginbottomonly"><div class="index_display bigrounded"><span class="fa fa-list-alt valignmiddle btnTitle-icon"></span><br>'.dol_escape_htmltag($langs->trans("ViewMyTicketList")).'</div></a>';
-print '<a href="view.php" class="butAction marginbottomonly"><div class="index_display bigrounded">'.img_picto('', 'ticket').'<br>'.dol_escape_htmltag($langs->trans("ShowTicketWithTrackId")).'</div></a>';
+print '<a href="create_ticket.php" rel="nofollow noopener" class="butAction marginbottomonly"><div class="index_create bigrounded"><span class="fa fa-plus-circle valignmiddle btnTitle-icon"></span><br>'.dol_escape_htmltag($langs->trans("CreateTicket")).'</div></a>';
+print '<a href="list.php" rel="nofollow noopener" class="butAction marginbottomonly"><div class="index_display bigrounded"><span class="fa fa-list-alt valignmiddle btnTitle-icon"></span><br>'.dol_escape_htmltag($langs->trans("ViewMyTicketList")).'</div></a>';
+print '<a href="view.php" rel="nofollow noopener" class="butAction marginbottomonly"><div class="index_display bigrounded">'.img_picto('', 'ticket').'<br>'.dol_escape_htmltag($langs->trans("ShowTicketWithTrackId")).'</div></a>';
 print '<div style="clear:both;"></div>';
 print '</div>';
 print '</div>';
diff --git a/htdocs/public/ticket/list.php b/htdocs/public/ticket/list.php
index 9e7d5eacfa8..0f9542c986a 100644
--- a/htdocs/public/ticket/list.php
+++ b/htdocs/public/ticket/list.php
@@ -563,7 +563,7 @@ if ($action == "view_ticketlist")
 					// Subject
 					if (!empty($arrayfields['t.subject']['checked'])) {
 						print '<td>';
-						print '<a href="javascript:viewticket(\''.$obj->track_id.'\',\''.$_SESSION['email_customer'].'\');">'.$obj->subject.'</a>';
+						print '<a rel="nofollow" href="javascript:viewticket(\''.$obj->track_id.'\',\''.$_SESSION['email_customer'].'\');">'.$obj->subject.'</a>';
 						print '</td>';
 					}
 
diff --git a/htdocs/public/ticket/view.php b/htdocs/public/ticket/view.php
index 3b0e2d0cdcc..02c7c9e51d8 100644
--- a/htdocs/public/ticket/view.php
+++ b/htdocs/public/ticket/view.php
@@ -374,7 +374,7 @@ if ($action == "view_ticket" || $action == "presend" || $action == "close" || $a
 		print load_fiche_titre($langs->trans('TicketMessagesList'), '', 'object_conversation');
 		$object->viewTicketMessages(false, true, $object->dao);
 	} else {
-		print '<div class="error">Not Allowed<br><a href="'.$_SERVER['PHP_SELF'].'?track_id='.$object->dao->track_id.'">'.$langs->trans('Back').'</a></div>';
+		print '<div class="error">Not Allowed<br><a href="'.$_SERVER['PHP_SELF'].'?track_id='.$object->dao->track_id.'" rel="nofollow noopener">'.$langs->trans('Back').'</a></div>';
 	}
 } else {
 	print '<div class="center opacitymedium margintoponly marginbottomonly">'.$langs->trans("TicketPublicMsgViewLogIn").'</div>';