Security Guide
Deep dives into smart contract vulnerabilities, exploit patterns, and architectural security best practices.
Solidity Attack Vector #25: Shadowed State Variables
One of the core principles developers rely on is the immutability of state variables. But what happens when inheritance hides them?
Solidity Attack Vector #24: Floating Pragma
Why 'pragma solidity ^0.8.0' might be a security risk for your production deployments.
Solidity Attack Vector #23: Right-To-Left-Override (RLO) Control Character
The U+202E symbol is a subtle but dangerous attack vector that can deceive developers by reversing string displays.
Solidity Attack Vector #22: Short Address Attack
How trailing zeros in addresses can be exploited to steal funds via EVM's ABI encoding quirks.
Solidity Attack Vector #21: Accessing Private Data
Private does not mean secret. Learn why nothing is truly hidden on the blockchain.
Solidity Attack Vector #19: Unexpected Ether
Think your contract only receives ETH through your functions? Think again. The 'Self-Destruct' force-feeding explained.
Solidity Attack Vector #18: Outdated Compiler Version
The dangers of building the future on the bugs of the past.
Solidity Attack Vector #17: Phantom Functions
When a function call succeeds but does absolutely nothing. The 'call' vs 'delegatecall' trap.
Solidity Attack Vector #16: Rounding Down to Zero
Precision loss is not just a math problem—it's a path to draining pools. How $1 can become $0 in an instant.
Solidity Attack Vector #15: Sandwich Attack
How MEV bots squeeze your profit between two transactions and how to build slippage protection.
Solidity Attack Vector #14: Timestamp Dependence
Why you should never use block.timestamp for a lottery or a critical deadline.
Solidity Attack Vector #13: Strict Equalities
The danger of using '==' for balances and how it can lead to DoS.
Solidity Attack Vector #12: Force Feeding
Disrupting accounting systems by injecting funds where they aren't expected.
Solidity Attack Vector #11: No Address Zero Check
The most common bug in DeFi: sending funds to the void.
Solidity Attack Vector #10: Unchecked Call Return Values
What happens when a transfer fails but your contract thinks it succeeded?
Solidity Attack Vector #9: Honeypot
Contracts designed to look vulnerable just to trap attackers' funds.
Solidity Attack Vector #8: Block Gas Limit
How long loops can permanently brick your contract.
Solidity Attack Vector #7: Reentrancy
The attack that birthed Ethereum Classic. Still the most dangerous bug in the space.
Solidity Attack Vector #6: Flash Loan Attacks
Borrowing millions to manipulate markets in a single block.
Solidity Attack Vector #5: Improper Access Control
Leaving your admin functions open to the world.
Solidity Attack Vector #4: Oracle Manipulation
Tricking the contract's source of truth.
Solidity Attack Vector #3: Front Running
Jumping the line to steal profits.
Solidity Attack Vector #2: Tx.Origin for Authentication
Why you should use msg.sender instead of tx.origin.
Solidity Attack Vector #1: Self-Destruct Exploits
The first step in understanding force-feeding vulnerabilities.