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Smart Contract Safety: How to Avoid Exploits

Smart contracts form the backbone of Decentralized Finance (DeFi), executing logic exactly as written. However, if they are written poorly, they can harbor catastrophic bugs.

Why Smart Contracts Fail

Because blockchain transactions are immutable, a bug cannot be simply 'reversed.' If a hacker finds a loophole, they can drain the entire protocol.

Common Vulnerabilities

1. Reentrancy Attacks: A function makes an external call to an untrusted contract before it resolves its own state, allowing the attacker to recursively call the function and drain funds.
2. Front-Running (MEV): Bots monitor pending transactions and pay higher gas fees to execute their own trades first, profiting at your expense.
3. Centralization Risks: Some contracts have 'owner' backdoors, allowing developers to mint infinite tokens or freeze user funds.

How to Verify Safety

Always look for projects that have undergone rigorous security audits by top-tier firms like CertiK, Hacken, or Trail of Bits. On TokenRadar, our Security Score automatically deducts points from tokens lacking verifiable audits.

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