diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index b7d34ec..bdd07d6 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2196,8 +2196,12 @@
 							  hard copy or in digital form
 							- Concepts: #flashcard
 								- confidentiality
-									- Confidentiality means that only people with the right
+									- Confidentiality means that :-> only people with the right
 									  permission can access and use information
+									- Ensuring confidentiality :-> encryption, access controls
+									- Compromising confidentiality :-> (intentional)
+									  shoulder surfing, social engineering; (accidental)
+									  publication
 								- integrity, and
 								- availability of information
 						- Privacy and Data Protection