diff --git a/CHANGELOG.asciidoc b/CHANGELOG.asciidoc
index 7635be013..dff5e2d13 100644
--- a/CHANGELOG.asciidoc
+++ b/CHANGELOG.asciidoc
@@ -51,6 +51,7 @@ Changed
 - `:hint tab` and `F` now respect the `background-tabs` setting. To enforce a foreground tab (what `F` did before), use `:hint tab-fg` or `;f`.
 - `:scroll` now takes a direction argument (`up`/`down`/`left`/`right`/`top`/`bottom`/`page-up`/`page-down`) instead of two pixel arguments (`dx`/`dy`). The old form still works but is deprecated.
 - The `ui -> user-stylesheet` setting now also takes file paths relative to the config directory.
+- The `content -> cookies-accept` setting now has new `no-3rdparty` (default) and `no-unknown-3rdparty` values to block third-party cookies. The `default` value got renamed to `all`.
 
 Deprecated
 ~~~~~~~~~~
diff --git a/doc/help/settings.asciidoc b/doc/help/settings.asciidoc
index 97bd781d0..3b6319af9 100644
--- a/doc/help/settings.asciidoc
+++ b/doc/help/settings.asciidoc
@@ -149,7 +149,7 @@
 |<<content-ignore-javascript-alert,ignore-javascript-alert>>|Whether all javascript alerts should be ignored.
 |<<content-local-content-can-access-remote-urls,local-content-can-access-remote-urls>>|Whether locally loaded documents are allowed to access remote urls.
 |<<content-local-content-can-access-file-urls,local-content-can-access-file-urls>>|Whether locally loaded documents are allowed to access other local urls.
-|<<content-cookies-accept,cookies-accept>>|Whether to accept cookies.
+|<<content-cookies-accept,cookies-accept>>|Control which cookies to accept.
 |<<content-cookies-store,cookies-store>>|Whether to store cookies.
 |<<content-host-block-lists,host-block-lists>>|List of URLs of lists which contain hosts to block.
 |<<content-host-blocking-enabled,host-blocking-enabled>>|Whether host blocking is enabled.
@@ -1316,14 +1316,16 @@ Default: +pass:[true]+
 
 [[content-cookies-accept]]
 === cookies-accept
-Whether to accept cookies.
+Control which cookies to accept.
 
 Valid values:
 
- * +default+: Default QtWebKit behavior.
+ * +all+: Accept all cookies.
+ * +no-3rdparty+: Accept cookies from the same origin only.
+ * +no-unknown-3rdparty+: Accept cookies from the same origin only, unless a cookie is already set for the domain.
  * +never+: Don't accept cookies at all.
 
-Default: +pass:[default]+
+Default: +pass:[no-3rdparty]+
 
 [[content-cookies-store]]
 === cookies-store
diff --git a/qutebrowser/config/config.py b/qutebrowser/config/config.py
index 503ebc0c7..290f6651a 100644
--- a/qutebrowser/config/config.py
+++ b/qutebrowser/config/config.py
@@ -328,6 +328,8 @@ class ConfigManager(QObject):
         ('colors', 'completion.item.bg'),
     ]
     CHANGED_OPTIONS = {
+        ('content', 'cookies-accept'):
+            _get_value_transformer('default', 'no-3rdparty'),
     }
 
     changed = pyqtSignal(str, str)
diff --git a/qutebrowser/config/configdata.py b/qutebrowser/config/configdata.py
index 41fbfff32..bdaba3db9 100644
--- a/qutebrowser/config/configdata.py
+++ b/qutebrowser/config/configdata.py
@@ -675,8 +675,8 @@ def data(readonly=False):
              "local urls."),
 
             ('cookies-accept',
-             SettingValue(typ.AcceptCookies(), 'default'),
-             "Whether to accept cookies."),
+             SettingValue(typ.AcceptCookies(), 'no-3rdparty'),
+             "Control which cookies to accept."),
 
             ('cookies-store',
              SettingValue(typ.Bool(), 'true'),
diff --git a/qutebrowser/config/configtypes.py b/qutebrowser/config/configtypes.py
index bc942ef1f..23909b9c1 100644
--- a/qutebrowser/config/configtypes.py
+++ b/qutebrowser/config/configtypes.py
@@ -1337,9 +1337,14 @@ class LastClose(BaseType):
 
 class AcceptCookies(BaseType):
 
-    """Whether to accept a cookie."""
+    """Control which cookies to accept."""
 
-    valid_values = ValidValues(('default', "Default QtWebKit behavior."),
+    valid_values = ValidValues(('all', "Accept all cookies."),
+                               ('no-3rdparty', "Accept cookies from the same"
+                                " origin only."),
+                               ('no-unknown-3rdparty', "Accept cookies from "
+                                "the same origin only, unless a cookie is "
+                                "already set for the domain."),
                                ('never', "Don't accept cookies at all."))
 
 
diff --git a/qutebrowser/config/websettings.py b/qutebrowser/config/websettings.py
index 117abbb26..c3216aae2 100644
--- a/qutebrowser/config/websettings.py
+++ b/qutebrowser/config/websettings.py
@@ -238,6 +238,25 @@ class GlobalSetter(Setter):
         self._setter(*args)
 
 
+class CookiePolicy(Base):
+
+    """The ThirdPartyCookiePolicy setting is different from other settings."""
+
+    MAPPING = {
+        'all': QWebSettings.AlwaysAllowThirdPartyCookies,
+        'no-3rdparty': QWebSettings.AlwaysBlockThirdPartyCookies,
+        'never': QWebSettings.AlwaysBlockThirdPartyCookies,
+        'no-unknown-3rdparty': QWebSettings.AllowThirdPartyWithExistingCookies,
+    }
+
+    def get(self, qws=None):
+        return config.get('content', 'cookies-accept')
+
+    def _set(self, value, qws=None):
+        QWebSettings.globalSettings().setThirdPartyCookiePolicy(
+            self.MAPPING[value])
+
+
 MAPPINGS = {
     'content': {
         'allow-images':
@@ -264,6 +283,8 @@ MAPPINGS = {
             Attribute(QWebSettings.LocalContentCanAccessRemoteUrls),
         'local-content-can-access-file-urls':
             Attribute(QWebSettings.LocalContentCanAccessFileUrls),
+        'cookies-accept':
+            CookiePolicy(),
     },
     'network': {
         'dns-prefetch':