The Smart Contract Security Field Guide for Hackers

Security has never been more critical in the rapidly evolving world of blockchain technology. Understanding the wide range of attacks on smart contracts is vital for developers, auditors, and bug bounty hunters. This collection of articles tries to serve as an educational resource to cultivate offensive security skills in the community and help identify and prevent common vulnerabilities in smart contract systems.

Category	Description
ABI Hash Collisions	Insights into the consequences of ABI hash collisions on smart contracts.
Ambiguous Evaluation Order	Solidity's ambiguous evaluation order and potential weaknesses.
Approval Vulnerabilities	Token approvals, their security risks, and concrete exploits that result in the loss of user funds.
Exposed Data	The dangers of storing PII and related artifacts on-chain.
Frontrunning	The role of frontrunning in blockchain and related potential exploits.
Griefing	The implications of griefing for the operations of smart contracts.
Incorrect Parameter Order	The common pitfall of providing a set of parameters ordered differently than expected.
Oracle Manipulation Attacks	Security vulnerabilities associated with centralized and decentralized oracles.
Reentrancy Attacks	The threat of reentrancy attacks to the security of smart contracts.
Signature-related Attacks	How malfunctioning signature validation can compromise smart contracts.
Unexpected Ether Transfers	Risks and precautions related to unexpected Ether transfers in smart contracts.