diff --git a/CHANGELOG.md b/CHANGELOG.md
index c712ef66..7a0ef4c7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,7 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 - Made packet capture and system logging optional (off by default). To turn on, change the io_settings.save_pcap_logs and io_settings.save_sys_logs settings in the config.
 - Made observation space flattening optional (on by default). To turn off for an agent, change the agent_settings.flatten_obs setting in the config.
-
+- Fixed an issue where the data manipulation attack was triggered at episode start.
 
 ### Added
 - Network Hardware - Added base hardware module with NIC, SwitchPort, Node, and Link. Nodes have