diff --git a/advanced_expert/vulnerabilities/README.md b/advanced_expert/vulnerabilities/README.md
index 49ff4d6..6a32990 100644
--- a/advanced_expert/vulnerabilities/README.md
+++ b/advanced_expert/vulnerabilities/README.md
@@ -26,5 +26,15 @@
 * **[nonce reuse](nonce)**
 
 
+----
+
+### resources
+
+<br>
+
+* **[secureum-mind-map](https://github.com/x676f64/secureum-mind_map/blob/master/3.%20Solidity%20201.md)**
+* **[defi hacks & exploits](https://github.com/SunWeb3Sec/DeFiHackLabs/#list-of-defi-hacks--exploits)**
+* **[ethereum smart contract security best practices](https://consensys.github.io/smart-contract-best-practices/)**
+* **[biased nonce sense lattice attacks against weak ECDSA](https://www.youtube.com/watch?v=6ssTlSSIJQE_)**