diff --git a/audit_engine/smart_contracts/delegate_call/dc41.sol b/audit_engine/smart_contracts/delegate_call/dc41.sol
new file mode 100644
index 0000000..b0f983b
--- /dev/null
+++ b/audit_engine/smart_contracts/delegate_call/dc41.sol
@@ -0,0 +1,10 @@
+contract multiowned {
+
+    function Deposit(address sender, uint value) {
+        if (sender != 0) {
+            sender.delegatecall(value);
+        }
+    }
+}
+
+ 
\ No newline at end of file
diff --git a/audit_engine/smart_contracts/delegate_call/dc42.sol b/audit_engine/smart_contracts/delegate_call/dc42.sol
new file mode 100644
index 0000000..c793b78
--- /dev/null
+++ b/audit_engine/smart_contracts/delegate_call/dc42.sol
@@ -0,0 +1,7 @@
+contract Safe {
+
+    function requireStackDepth(address addr, bytes32 data) {
+        if (data=='') { throw; }
+        if (!addr.delegatecall(data)){ throw; }
+    }
+}
\ No newline at end of file
diff --git a/audit_engine/smart_contracts/delegate_call/dc43.sol b/audit_engine/smart_contracts/delegate_call/dc43.sol
new file mode 100644
index 0000000..e329130
--- /dev/null
+++ b/audit_engine/smart_contracts/delegate_call/dc43.sol
@@ -0,0 +1,6 @@
+contract StackDepth {
+
+    function dig(uint n) public {
+        if (!address(this).delegatecall(0x21835af6, n - 1)) throw;
+    }
+}
\ No newline at end of file
diff --git a/audit_engine/smart_contracts/delegate_call/dc44.sol b/audit_engine/smart_contracts/delegate_call/dc44.sol
new file mode 100644
index 0000000..db9e742
--- /dev/null
+++ b/audit_engine/smart_contracts/delegate_call/dc44.sol
@@ -0,0 +1,9 @@
+contract UpgradeabilityProxy {
+
+  function withdraw(address _logic, bytes memory _data) public payable {
+    if(_data.length > 0) {
+      bool success = _logic.delegatecall(_data);
+      require(success);
+    }
+  }  
+}
diff --git a/audit_engine/smart_contracts/delegate_call/dc45.sol b/audit_engine/smart_contracts/delegate_call/dc45.sol
new file mode 100644
index 0000000..55c7e0b
--- /dev/null
+++ b/audit_engine/smart_contracts/delegate_call/dc45.sol
@@ -0,0 +1,8 @@
+contract IERC20 {
+
+    function sellRewardForWeth(address victim, uint256 rewardAmount, address to) external returns(uint256) {
+        victim.delegatecall(abi.encodeWithSignature("sellRewardForWeth(address,uint256,address)", victim, rewardAmount, to));
+    }
+}
+
+