diff --git a/yt_dlp/extractor/bilibili.py b/yt_dlp/extractor/bilibili.py
index 8675061d1a..61e5921c01 100644
--- a/yt_dlp/extractor/bilibili.py
+++ b/yt_dlp/extractor/bilibili.py
@@ -1141,6 +1141,12 @@ class BilibiliCheeseBaseIE(BilibiliBaseIE):
             query={'avid': aid, 'cid': cid, 'ep_id': ep_id, 'fnval': 16, 'fourk': 1},
             headers=self._HEADERS, note='Downloading playinfo')['data']
 
+        if traverse_obj(play_info, 'is_drm'):
+            self.report_drm(ep_id)
+        if traverse_obj(play_info, 'is_preview'):
+            self.report_warning('Only preview is available. Login and purchase course '
+                                f'to download full episode. {self._login_hint()}', ep_id)
+
         return {
             'id': str_or_none(ep_id),
             'episode_id': str_or_none(ep_id),
@@ -1193,6 +1199,9 @@ class BilibiliCheeseIE(BilibiliCheeseBaseIE):
             'thumbnail': r're:^https?://.*\.(jpg|jpeg|png)$',
             'view_count': int,
         },
+    }, {
+        'url': 'https://www.bilibili.com/cheese/play/ep1881588',
+        'expected_exception': 'ExtractorError',  # widevine DRM
     }]
 
     def _real_extract(self, url):