diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index bdd07d6..068d7a2 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2203,6 +2203,14 @@
 									  shoulder surfing, social engineering; (accidental)
 									  publication
 								- integrity, and
+									- Integrity means that :-> information systems and their
+									  data are accurate, Changes cannot be made to data without
+									  appropriate permissions
+									- Ensuring integrity :-> controls ensuring the correct
+									  entry of information, authorization, antivirus
+									- Compromising integrity :-> (intentional) employee or
+									  external attacks; (accidental) employee error
+									-
 								- availability of information
 						- Privacy and Data Protection
 						  collapsed:: true