From 5fd2098273cc6a8e5fcddb2b76cc6774279fec84 Mon Sep 17 00:00:00 2001
From: YnQzZ2w <138340846+YnQzZ2w@users.noreply.github.com>
Date: Thu, 31 Aug 2023 16:49:37 -0700
Subject: [PATCH] add checks effects interact pattern
---
.../vulnerabilities/reentrancy_attacks/README.md | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/advanced_expert/vulnerabilities/reentrancy_attacks/README.md b/advanced_expert/vulnerabilities/reentrancy_attacks/README.md
index 625b03c..d9c0763 100644
--- a/advanced_expert/vulnerabilities/reentrancy_attacks/README.md
+++ b/advanced_expert/vulnerabilities/reentrancy_attacks/README.md
@@ -1,6 +1,7 @@
## reentrancy attacks
+
@@ -73,6 +74,14 @@ function withdrawBalance() public noReentrant {
#### Option 2: CEI (checks effects interaction) pattern
+
+
+
+
+
+
+
+
```
function withdrawBalance() public {
uint amountToWithdraw = userBalances[msg.sender];
@@ -90,6 +99,8 @@ function withdrawBalance() public {
### resources
+
+
* [reentrancy on solidity docs](https://docs.soliditylang.org/en/latest/security-considerations.html#re-entrancy)
* [reentrancy on DASP](https://www.dasp.co/#item-1)
* [reentrancy on SWC](https://swcregistry.io/docs/SWC-107)