diff --git a/src/Wallabag/CoreBundle/Resources/views/themes/baggy/Entry/entries.html.twig b/src/Wallabag/CoreBundle/Resources/views/themes/baggy/Entry/entries.html.twig
index adc704bb1..cfc6644b8 100644
--- a/src/Wallabag/CoreBundle/Resources/views/themes/baggy/Entry/entries.html.twig
+++ b/src/Wallabag/CoreBundle/Resources/views/themes/baggy/Entry/entries.html.twig
@@ -57,7 +57,7 @@
             </div>
 
             <ul class="tools links">
-                <li><a href="{{ entry.url|e }}" target="_blank" title="{{ 'entry.list.original_article'|trans }} : {{ entry.title|e }}"><span>{{ entry.domainName|removeWww }}</span></a></li>
+                <li><a href="{{ entry.url|e }}" target="_blank" rel="noopener" title="{{ 'entry.list.original_article'|trans }} : {{ entry.title|e }}"><span>{{ entry.domainName|removeWww }}</span></a></li>
                 <li><a title="{{ 'entry.list.toogle_as_read'|trans }}" class="tool icon {% if entry.isArchived == 0 %}archive-off{% else %}archive{% endif %}" href="{{ path('archive_entry', { 'id': entry.id }) }}"><i class="material-icons md-24 vertical-align-middle">check</i><span>{{ 'entry.list.toogle_as_read'|trans }}</span></a></li>
                 <li><a title="{{ 'entry.list.toogle_as_star'|trans }}" class="tool icon {% if entry.isStarred == 0 %}fav-off{% else %}fav{% endif %}" href="{{ path('star_entry', { 'id': entry.id }) }}"><i class="material-icons md-24 vertical-align-middle">star_rate</i><span>{{ 'entry.list.toogle_as_star'|trans }}</span></a></li>
                 <li><a title="{{ 'entry.list.delete'|trans }}" class="tool icon" onclick="return confirm('{{ 'entry.confirm.delete'|trans|escape('js') }}')" href="{{ path('delete_entry', { 'id': entry.id }) }}"><i class="material-icons md-24 vertical-align-middle">delete</i><span>{{ 'entry.list.delete'|trans }}</span></a></li>
diff --git a/src/Wallabag/CoreBundle/Resources/views/themes/baggy/Entry/entry.html.twig b/src/Wallabag/CoreBundle/Resources/views/themes/baggy/Entry/entry.html.twig
index d42739ac2..48866f6e2 100644
--- a/src/Wallabag/CoreBundle/Resources/views/themes/baggy/Entry/entry.html.twig
+++ b/src/Wallabag/CoreBundle/Resources/views/themes/baggy/Entry/entry.html.twig
@@ -11,7 +11,7 @@
         <div id="article_toolbar">
             <ul class="links">
                 <li class="topPosF"><a href="#top" title="{{ 'entry.view.left_menu.back_to_top'|trans }}" class="tool top icon icon-arrow-up-thick"><span>{{ 'entry.view.left_menu.set_as_read'|trans }}</span></a></li>
-                <li><a href="{{ entry.url|e }}" target="_blank" title="{{ 'entry.view.original_article'|trans }} : {{ entry.title|e }}" class="tool link icon icon-link original"><span>{{ entry.domainName|removeWww }}</span></a></li>
+                <li><a href="{{ entry.url|e }}" target="_blank" rel="noopener" title="{{ 'entry.view.original_article'|trans }} : {{ entry.title|e }}" class="tool link icon icon-link original"><span>{{ entry.domainName|removeWww }}</span></a></li>
                 <li><a title="{{ 'entry.view.left_menu.re_fetch_content'|trans }}" class="tool icon icon-reload" href="{{ path('reload_entry', { 'id': entry.id }) }}"><span>{{ 'entry.view.left_menu.re_fetch_content'|trans }}</span></a></li>
 
                 {% set markAsReadLabel = 'entry.view.left_menu.set_as_unread' %}
@@ -27,13 +27,13 @@
                     <li><a href="{{ path('share', {'id': entry.id }) }}" target="_blank" class="tool icon icon-eye" title="{{ 'entry.view.left_menu.public_link'|trans }}"><span>{{ 'entry.view.left_menu.public_link'|trans }}</span></a></li>
                     <li><a href="{{ path('delete_share', {'id': entry.id }) }}" class="tool icon icon-no-eye" title="{{ 'entry.view.left_menu.delete_public_link'|trans }}"><span>{{ 'entry.view.left_menu.delete_public_link'|trans }}</span></a></li>
                 {% endif %}
-                {% if craue_setting('share_twitter') %}<li><a href="https://twitter.com/home?status={{entry.title|url_encode}}%20{{ entry.url|url_encode }}%20via%20@wallabagapp" target="_blank" class="tool twitter icon icon-twitter" title="Tweet"><span>Tweet</span></a></li>{% endif %}
+                {% if craue_setting('share_twitter') %}<li><a href="https://twitter.com/home?status={{entry.title|url_encode}}%20{{ entry.url|url_encode }}%20via%20@wallabagapp" target="_blank" rel="noopener" class="tool twitter icon icon-twitter" title="Tweet"><span>Tweet</span></a></li>{% endif %}
                 {% if craue_setting('share_mail') %}<li><a href="mailto:?subject={{ entry.title|url_encode }}&amp;body={{ entry.url|url_encode }}%20via%20@wallabagapp" class="tool email icon icon-mail" title="Email"><span>Email</span></a></li>{% endif %}
-                {% if craue_setting('share_shaarli') %}<li><a href="{{ craue_setting('shaarli_url') }}/index.php?post={{ entry.url|url_encode }}&amp;title={{ entry.title|url_encode }}&amp;tags={{ entry.tags|join(',')|url_encode }}{% if craue_setting('shaarli_share_origin_url') %}&amp;original_url={{ entry.originUrl|url_encode }}{% endif %}" target="_blank" class="tool icon-image icon-image--shaarli" title="shaarli"><span>shaarli</span></a></li>{% endif %}
-                {% if craue_setting('share_scuttle') %}<li><a href="{{ craue_setting('scuttle_url') }}/bookmarks.php?action=add&amp;address={{ entry.url|url_encode }}&amp;title={{ entry.title|url_encode }}&amp;tags={{ entry.tags|join(',')|url_encode }}" target="_blank" class="tool icon-image icon-image--scuttle" title="scuttle"><span>scuttle</span></a></li>{% endif %}
-                {% if craue_setting('share_diaspora') %}<li><a href="{{ craue_setting('diaspora_url') }}/bookmarklet?url={{ entry.url|url_encode }}&title={{ entry.title|url_encode }}&notes=&v=1&noui=1&jump=doclose" target="_blank" class="tool diaspora icon-image icon-image--diaspora" title="diaspora"><span>diaspora</span></a></li>{% endif %}
-                {% if craue_setting('share_unmark') %}<li><a href="{{ craue_setting('unmark_url') }}/mark/add?url={{ entry.url|url_encode }}&amp;title={{entry.title|url_encode}}&amp;v=6" target="_blank" class="tool unmark icon-image icon-image--unmark" title="unmark"><span>unmark.it</span></a></li>{% endif %}
-                {% if craue_setting('carrot') %}<li><a href="https://secure.carrot.org/GiveAndGetBack.do?url={{ entry.url|url_encode }}&title={{ entry.title|url_encode }}" class="tool carrot icon-image icon-image--carrot" target="_blank" title="carrot"><span>Carrot</span></a></li>{% endif %}
+                {% if craue_setting('share_shaarli') %}<li><a href="{{ craue_setting('shaarli_url') }}/index.php?post={{ entry.url|url_encode }}&amp;title={{ entry.title|url_encode }}&amp;tags={{ entry.tags|join(',')|url_encode }}{% if craue_setting('shaarli_share_origin_url') %}&amp;original_url={{ entry.originUrl|url_encode }}{% endif %}" target="_blank" rel="noopener" class="tool icon-image icon-image--shaarli" title="shaarli"><span>shaarli</span></a></li>{% endif %}
+                {% if craue_setting('share_scuttle') %}<li><a href="{{ craue_setting('scuttle_url') }}/bookmarks.php?action=add&amp;address={{ entry.url|url_encode }}&amp;title={{ entry.title|url_encode }}&amp;tags={{ entry.tags|join(',')|url_encode }}" target="_blank" rel="noopener" class="tool icon-image icon-image--scuttle" title="scuttle"><span>scuttle</span></a></li>{% endif %}
+                {% if craue_setting('share_diaspora') %}<li><a href="{{ craue_setting('diaspora_url') }}/bookmarklet?url={{ entry.url|url_encode }}&title={{ entry.title|url_encode }}&notes=&v=1&noui=1&jump=doclose" target="_blank" rel="noopener" class="tool diaspora icon-image icon-image--diaspora" title="diaspora"><span>diaspora</span></a></li>{% endif %}
+                {% if craue_setting('share_unmark') %}<li><a href="{{ craue_setting('unmark_url') }}/mark/add?url={{ entry.url|url_encode }}&amp;title={{entry.title|url_encode}}&amp;v=6" target="_blank" rel="noopener" class="tool unmark icon-image icon-image--unmark" title="unmark"><span>unmark.it</span></a></li>{% endif %}
+                {% if craue_setting('carrot') %}<li><a href="https://secure.carrot.org/GiveAndGetBack.do?url={{ entry.url|url_encode }}&title={{ entry.title|url_encode }}" class="tool carrot icon-image icon-image--carrot" target="_blank" rel="noopener" title="carrot"><span>Carrot</span></a></li>{% endif %}
                 {% if craue_setting('show_printlink') %}<li><a title="{{ 'entry.view.left_menu.print'|trans }}" class="tool icon icon-print" href="javascript: window.print();"><span>{{ 'entry.view.left_menu.print'|trans }}</span></a></li>{% endif %}
                 {% if craue_setting('export_epub') %}<li><a href="{{ path('export_entry', { 'id': entry.id, 'format': 'epub' }) }}" title="Generate ePub file">EPUB</a></li>{% endif %}
                 {% if craue_setting('export_mobi') %}<li><a href="{{ path('export_entry', { 'id': entry.id, 'format': 'mobi' }) }}" title="Generate Mobi file">MOBI</a></li>{% endif %}
@@ -74,7 +74,7 @@
 
             {% if entry.originUrl is not empty %}
                 <i class="material-icons" title="{{ 'entry.view.provided_by'|trans }}">launch</i>
-                <a href="{{ entry.originUrl|e }}" target="_blank" class="tool">
+                <a href="{{ entry.originUrl|e }}" target="_blank" rel="noopener" class="tool">
                     {{ entry.originUrl|striptags|removeSchemeAndWww|truncate(32) }}
                 </a>
             {% endif %}
diff --git a/src/Wallabag/CoreBundle/Resources/views/themes/common/Entry/share.html.twig b/src/Wallabag/CoreBundle/Resources/views/themes/common/Entry/share.html.twig
index b9fcc0058..e1c7aad96 100644
--- a/src/Wallabag/CoreBundle/Resources/views/themes/common/Entry/share.html.twig
+++ b/src/Wallabag/CoreBundle/Resources/views/themes/common/Entry/share.html.twig
@@ -27,7 +27,7 @@
     <body>
         <header class="block">
             <h1>{{ entry.title|e|raw }}</h1>
-            <a href="{{ entry.url|e }}" target="_blank" title="{{ 'entry.view.original_article'|trans }} : {{ entry.title|e|raw }}" class="tool">{{ entry.domainName|removeWww }}</a>
+            <a href="{{ entry.url|e }}" target="_blank" rel="noopener" title="{{ 'entry.view.original_article'|trans }} : {{ entry.title|e|raw }}" class="tool">{{ entry.domainName|removeWww }}</a>
             <p class="shared-by">{{ "entry.public.shared_by_wallabag"|trans({'%wallabag_instance%': url('homepage'), '%username%': entry.user.username})|raw }}.</p>
             {% if entry.previewPicture is not null %}
                 <img class="preview" src="{{ entry.previewPicture }}" alt="{{ entry.title|striptags|e('html_attr') }}" />
diff --git a/src/Wallabag/CoreBundle/Resources/views/themes/common/Static/howto.html.twig b/src/Wallabag/CoreBundle/Resources/views/themes/common/Static/howto.html.twig
index 231f9bdf2..fbd2755a3 100644
--- a/src/Wallabag/CoreBundle/Resources/views/themes/common/Static/howto.html.twig
+++ b/src/Wallabag/CoreBundle/Resources/views/themes/common/Static/howto.html.twig
@@ -28,18 +28,18 @@
                             <div class="col s12">
                                 <h5>{{ 'howto.top_menu.browser_addons'|trans }}</h5>
                                 <ul>
-                                    <li><a href="{{ addonsUrl.firefox }}" target="_blank">{{ 'howto.browser_addons.firefox'|trans }}</a></li>
-                                    <li><a href="{{ addonsUrl.chrome }}" target="_blank">{{ 'howto.browser_addons.chrome'|trans }}</a></li>
-                                    <li><a href="{{ addonsUrl.opera }}" target="_blank">{{ 'howto.browser_addons.opera'|trans }}</a></li>
+                                    <li><a href="{{ addonsUrl.firefox }}" target="_blank" rel="noopener">{{ 'howto.browser_addons.firefox'|trans }}</a></li>
+                                    <li><a href="{{ addonsUrl.chrome }}" target="_blank" rel="noopener">{{ 'howto.browser_addons.chrome'|trans }}</a></li>
+                                    <li><a href="{{ addonsUrl.opera }}" target="_blank" rel="noopener">{{ 'howto.browser_addons.opera'|trans }}</a></li>
                                 </ul>
                             </div>
 
                             <div class="col s12">
                                 <h5>{{ 'howto.top_menu.mobile_apps'|trans }}</h5>
                                 <ul>
-                                    <li>Android: <a href="{{ addonsUrl.f_droid }}" target="_blank">{{ 'howto.mobile_apps.android.via_f_droid'|trans }}</a> / <a href="{{ addonsUrl.google_play }}" target="_blank">{{ 'howto.mobile_apps.android.via_google_play'|trans }}</a></li>
+                                    <li>Android: <a href="{{ addonsUrl.f_droid }}" target="_blank" rel="noopener">{{ 'howto.mobile_apps.android.via_f_droid'|trans }}</a> / <a href="{{ addonsUrl.google_play }}" target="_blank" rel="noopener">{{ 'howto.mobile_apps.android.via_google_play'|trans }}</a></li>
                                     <li>iOS: <a href="{{ addonsUrl.ios }}" target="_blank">{{ 'howto.mobile_apps.ios'|trans }}</a></li>
-                                    <li>Windows Phone: <a href="{{ addonsUrl.windows }}" target="_blank">{{ 'howto.mobile_apps.windows'|trans }}</a></li>
+                                    <li>Windows Phone: <a href="{{ addonsUrl.windows }}" target="_blank" rel="noopener">{{ 'howto.mobile_apps.windows'|trans }}</a></li>
                                 </ul>
                             </div>
 
diff --git a/src/Wallabag/CoreBundle/Resources/views/themes/material/Entry/entry.html.twig b/src/Wallabag/CoreBundle/Resources/views/themes/material/Entry/entry.html.twig
index 7484d53be..9ae6e73e9 100644
--- a/src/Wallabag/CoreBundle/Resources/views/themes/material/Entry/entry.html.twig
+++ b/src/Wallabag/CoreBundle/Resources/views/themes/material/Entry/entry.html.twig
@@ -46,7 +46,7 @@
         </li>
 
         <li class="bold border-bottom hide-on-med-and-down">
-            <a class="waves-effect collapsible-header original" href="{{ entry.url|e }}" target="_blank">
+            <a class="waves-effect collapsible-header original" href="{{ entry.url|e }}" target="_blank" rel="noopener">
                 <i class="material-icons small">link</i>
                 <span>{{ 'entry.view.left_menu.view_original_article'|trans }}</span>
             </a>
@@ -127,42 +127,42 @@
                     {% endif %}
                     {% if craue_setting('share_twitter') %}
                         <li>
-                            <a href="https://twitter.com/home?status={{entry.title|striptags|url_encode}}%20{{ entry.url|url_encode }}%20via%20@wallabagapp" target="_blank" class="tool icon-twitter" title="twitter">
+                            <a href="https://twitter.com/home?status={{entry.title|striptags|url_encode}}%20{{ entry.url|url_encode }}%20via%20@wallabagapp" target="_blank" rel="noopener" class="tool icon-twitter" title="twitter">
                                 <span>twitter</span>
                             </a>
                         </li>
                     {% endif %}
                     {% if craue_setting('share_shaarli') %}
                         <li>
-                        <a href="{{ craue_setting('shaarli_url') }}/index.php?post={{ entry.url|url_encode }}&amp;title={{ entry.title|striptags|url_encode }}&amp;tags={{ entry.tags|join(',')|striptags|url_encode }}{% if craue_setting('shaarli_share_origin_url') %}&amp;original_url={{ entry.originUrl|url_encode }}{% endif %}" target="_blank" title="shaarli" class="tool icon-image shaarli">
+                        <a href="{{ craue_setting('shaarli_url') }}/index.php?post={{ entry.url|url_encode }}&amp;title={{ entry.title|striptags|url_encode }}&amp;tags={{ entry.tags|join(',')|striptags|url_encode }}{% if craue_setting('shaarli_share_origin_url') %}&amp;original_url={{ entry.originUrl|url_encode }}{% endif %}" target="_blank" rel="noopener" title="shaarli" class="tool icon-image shaarli">
                                 <span>shaarli</span>
                             </a>
                         </li>
                     {% endif %}
                     {% if craue_setting('share_scuttle') %}
                         <li>
-                        <a href="{{ craue_setting('scuttle_url') }}/bookmarks.php?action=add&amp;address={{ entry.url|url_encode }}&amp;title={{ entry.title|striptags|url_encode }}&amp;tags={{ entry.tags|join(',')|striptags|url_encode }}" target="_blank" title="scuttle" class="tool icon-image scuttle">
+                        <a href="{{ craue_setting('scuttle_url') }}/bookmarks.php?action=add&amp;address={{ entry.url|url_encode }}&amp;title={{ entry.title|striptags|url_encode }}&amp;tags={{ entry.tags|join(',')|striptags|url_encode }}" target="_blank" rel="noopener" title="scuttle" class="tool icon-image scuttle">
                                 <span>scuttle</span>
                             </a>
                         </li>
                     {% endif %}
                     {% if craue_setting('share_diaspora') %}
                         <li>
-                            <a href="{{ craue_setting('diaspora_url') }}/bookmarklet?url={{ entry.url|url_encode }}&amp;title={{ entry.title|striptags|url_encode }}&amp;notes=&amp;v=1&amp;noui=1&amp;jump=doclose" target="_blank" class="tool icon-image diaspora" title="diaspora">
+                            <a href="{{ craue_setting('diaspora_url') }}/bookmarklet?url={{ entry.url|url_encode }}&amp;title={{ entry.title|striptags|url_encode }}&amp;notes=&amp;v=1&amp;noui=1&amp;jump=doclose" target="_blank" rel="noopener" class="tool icon-image diaspora" title="diaspora">
                                 <span>diaspora*</span>
                             </a>
                         </li>
                     {% endif %}
                     {% if craue_setting('share_unmark') %}
                         <li>
-                            <a href="{{ craue_setting('unmark_url') }}/mark/add?url={{ entry.url|url_encode }}&amp;title={{entry.title|striptags|url_encode}}&amp;v=6" target="_blank" class="tool icon-image unmark" title="unmark">
+                            <a href="{{ craue_setting('unmark_url') }}/mark/add?url={{ entry.url|url_encode }}&amp;title={{entry.title|striptags|url_encode}}&amp;v=6" target="_blank" rel="noopener" class="tool icon-image unmark" title="unmark">
                                 <span>unmark.it</span>
                             </a>
                         </li>
                     {% endif %}
                     {% if craue_setting('carrot') %}
                         <li>
-                            <a href="https://secure.carrot.org/GiveAndGetBack.do?url={{ entry.url|url_encode }}&amp;title={{ entry.title|striptags|url_encode }}" target="_blank" title="carrot" class="tool icon-image carrot">
+                            <a href="https://secure.carrot.org/GiveAndGetBack.do?url={{ entry.url|url_encode }}&amp;title={{ entry.title|striptags|url_encode }}" target="_blank" rel="noopener" title="carrot" class="tool icon-image carrot">
                                 <span>Carrot</span>
                             </a>
                         </li>
@@ -251,7 +251,7 @@
                     {% endif %}
                     <li>
                         <i class="material-icons link">link</i>
-                        <a href="{{ entry.url|e }}" target="_blank" title="{{ 'entry.view.original_article'|trans }} : {{ entry.title|striptags }}" class="tool">
+                        <a href="{{ entry.url|e }}" target="_blank" rel="noopener" title="{{ 'entry.view.original_article'|trans }} : {{ entry.title|striptags }}" class="tool">
                             {{ entry.domainName|removeWww }}
                         </a>
                     </li>
@@ -262,7 +262,7 @@
                     {% if entry.originUrl is not empty %}
                         <li>
                             <i class="material-icons" title="{{ 'entry.view.provided_by'|trans }}">launch</i>
-                            <a href="{{ entry.originUrl|e }}" target="_blank" class="tool">
+                            <a href="{{ entry.originUrl|e }}" target="_blank" rel="noopener" class="tool">
                                 {{ entry.originUrl|striptags|removeSchemeAndWww|truncate(32) }}
                             </a>
                         </li>
diff --git a/src/Wallabag/CoreBundle/Resources/views/themes/material/layout.html.twig b/src/Wallabag/CoreBundle/Resources/views/themes/material/layout.html.twig
index f0012ad9f..052a8c01b 100644
--- a/src/Wallabag/CoreBundle/Resources/views/themes/material/layout.html.twig
+++ b/src/Wallabag/CoreBundle/Resources/views/themes/material/layout.html.twig
@@ -143,7 +143,7 @@
                     </div>
                     <div class="col s12 l4">
                         <p class="footer-text">
-                            {{ 'footer.wallabag.powered_by'|trans }} <a target="_blank" href="https://wallabag.org" class="grey-text text-lighten-4">wallabag</a> –
+                            {{ 'footer.wallabag.powered_by'|trans }} <a target="_blank" rel="noopener" href="https://wallabag.org" class="grey-text text-lighten-4">wallabag</a> –
                             <a class="grey-text text-lighten-4" href="{{ path('about') }}">{{ 'footer.wallabag.about'|trans|lower }}</a>
                         </p>
                     </div>