Update README.md

Author: BarmaleiDB-infosec

README.md

@@ -31,7 +31,7 @@ Supports **Ethereum smart contracts**, **Solana programs**, and **dApp/Web3 appl
 
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-## Vulnerability Detection (7 Categories)
+## Vulnerability Detection (12 Categories)
 
 | # | Category | Severity | Description |
 |---|----------|----------|-------------|
@@ -42,7 +42,11 @@ Supports **Ethereum smart contracts**, **Solana programs**, and **dApp/Web3 appl
 | 5 | **Delegatecall Misuse** | CRITICAL | Code injection via delegatecall |
 | 6 | **Access Control Issues** | CRITICAL | Missing permission checks |
 | 7 | **Timestamp Dependence** | LOW | Miner-manipulatable timestamps |
-
+| 8 | **Unchecked Return Value** | HIGH | .call/.delegatecall without require(success) |
+| 9 | **Front-running** | MEDIUM | Balance check before state update |
+| 10 | **Unprotected Selfdestruct** | CRITICAL | selfdestruct without access control |
+| 11 | **Missing Zero Address Check** | MEDIUM | Transfer without zero-address validation |
+| 12 | **Storage Collision** | HIGH | delegatecall with mutable storage |
 ---
 ## Why ChainScout?