diff --git a/recipes/economist.recipe b/recipes/economist.recipe
index f23a9a2cf5..14e178745e 100644
--- a/recipes/economist.recipe
+++ b/recipes/economist.recipe
@@ -250,10 +250,9 @@ class Economist(BasicNewsRecipe):
     def get_browser(self, *args, **kwargs):
         if self.from_archive:
             kwargs['user_agent'] = (
-                'Mozilla/5.0 (Linux; Android 14; 330333QCG Build/AP1A.140705.005; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/125.0.6422.165 Mobile Safari/537.36 Lamarr/3.37.0-3037003 (android)' # noqa
+                'Mozilla/5.0 (Linux; Android 14) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.6533.103 Mobile Safari/537.36 Lamarr' # noqa
             )
             br = BasicNewsRecipe.get_browser(self, *args, **kwargs)
-            br.addheaders += [('x-requested-with', 'com.economist.lamarr')]
         else:
             # Needed to bypass cloudflare
             kwargs['user_agent'] = 'common_words/based'
diff --git a/recipes/economist_free.recipe b/recipes/economist_free.recipe
index f23a9a2cf5..14e178745e 100644
--- a/recipes/economist_free.recipe
+++ b/recipes/economist_free.recipe
@@ -250,10 +250,9 @@ class Economist(BasicNewsRecipe):
     def get_browser(self, *args, **kwargs):
         if self.from_archive:
             kwargs['user_agent'] = (
-                'Mozilla/5.0 (Linux; Android 14; 330333QCG Build/AP1A.140705.005; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/125.0.6422.165 Mobile Safari/537.36 Lamarr/3.37.0-3037003 (android)' # noqa
+                'Mozilla/5.0 (Linux; Android 14) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.6533.103 Mobile Safari/537.36 Lamarr' # noqa
             )
             br = BasicNewsRecipe.get_browser(self, *args, **kwargs)
-            br.addheaders += [('x-requested-with', 'com.economist.lamarr')]
         else:
             # Needed to bypass cloudflare
             kwargs['user_agent'] = 'common_words/based'
diff --git a/recipes/economist_search.recipe b/recipes/economist_search.recipe
index 654bf5e5e1..a0c621e7d2 100644
--- a/recipes/economist_search.recipe
+++ b/recipes/economist_search.recipe
@@ -158,10 +158,9 @@ class econ_search(BasicNewsRecipe):
 
     def get_browser(self, *args, **kwargs):
         kwargs['user_agent'] = (
-            'Mozilla/5.0 (Linux; Android 14; 330333QCG Build/AP1A.140705.005; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/125.0.6422.165 Mobile Safari/537.36 Lamarr/3.37.0-3037003 (android)' # noqa
+            'Mozilla/5.0 (Linux; Android 14) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.6533.103 Mobile Safari/537.36 Lamarr' # noqa
         )
         br = BasicNewsRecipe.get_browser(self, *args, **kwargs)
-        br.addheaders += [('x-requested-with', 'com.economist.lamarr')]
         return br
 
     def preprocess_raw_html(self, raw, url):
diff --git a/recipes/economist_world_ahead.recipe b/recipes/economist_world_ahead.recipe
index 50e2f4feb2..3e9b177370 100644
--- a/recipes/economist_world_ahead.recipe
+++ b/recipes/economist_world_ahead.recipe
@@ -178,10 +178,9 @@ class EconomistWorld(BasicNewsRecipe):
 
     def get_browser(self, *args, **kwargs):
         kwargs['user_agent'] = (
-            'Mozilla/5.0 (Linux; Android 14; 330333QCG Build/AP1A.140705.005; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/125.0.6422.165 Mobile Safari/537.36 Lamarr/3.37.0-3037003 (android)' # noqa
+            'Mozilla/5.0 (Linux; Android 14) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.6533.103 Mobile Safari/537.36 Lamarr' # noqa
         )
         br = BasicNewsRecipe.get_browser(self, *args, **kwargs)
-        br.addheaders += [('x-requested-with', 'com.economist.lamarr')]
         return br
 
     def economist_test_article(self):
diff --git a/recipes/substack.recipe b/recipes/substack.recipe
index 059eaa1277..757cfcfdd6 100644
--- a/recipes/substack.recipe
+++ b/recipes/substack.recipe
@@ -41,8 +41,8 @@ class Substack(BasicNewsRecipe):
     recipe_specific_options = {
         'auths': {
             'short': 'enter the @handles you subscribe to:\nseperated by a space',
-            'long': 'julianmacfarlane ianleslie .... ....',
-            'default': 'julianmacfarlane ianleslie thesalvo',
+            'long': '@julianmacfarlane @simplicius76 .... ....',
+            'default': '@julianmacfarlane @simplicius76 @caitlinjohnstone @michaelmoore @seymourhersh @robertreich',
         },
         'days': {
             'short': 'Oldest article to download from this news source. In days ',
@@ -93,8 +93,8 @@ class Substack(BasicNewsRecipe):
         ans = []
         u = self.recipe_specific_options.get('auths')
         if u and isinstance(u, str):
-            for x in u.split():
-                ans.append('https://' + x.replace('@', '') + '.substack.com/feed')
+            for x in u.replace('@', ' ').split():
+                ans.append('https://' + x + '.substack.com/feed')
         return ans
 
     def preprocess_html(self, soup):