Home
1.
For IT Professionals
❱
1.1.
Establishing a Foundation
❱
1.1.1.
Defining Web3
1.1.2.
Evolution
1.1.3.
Blockchain & Distributed Ledger Technology
1.2.
Core Concepts and Terms
❱
1.2.1.
Key Terms in Web3
1.2.2.
Ethereum
1.2.3.
Smart Contract Blockchains
1.3.
Importance of Security
❱
1.3.1.
Unique Security Challenges
1.3.2.
Security Breaches
1.3.3.
Consequences of Security Failures
1.4.
Web3 Security Landscape
❱
1.4.1.
Threats and Attack Vectors
1.4.2.
Web3 Components
1.4.3.
Anonymity and Privacy
1.5.
Security Principles
❱
1.5.1.
Reimagining Security
1.5.2.
Trust & Verification
1.5.3.
Openness and Transparency
1.6.
Challenges and Opportunities
❱
1.6.1.
Navigating Decentralization
1.6.2.
Enhanced Security Advantage
1.6.3.
Balancing Innovation
2.
Best Practices
❱
2.1.
Secure Development
❱
2.1.1.
Secure Development Lifecycle
2.1.2.
Security Focused Design
2.1.3.
Testing & Verification
2.1.4.
DevOps
2.1.5.
Upgrades and Maintenance
2.1.6.
Developer Education
2.2.
Risk Management Strategies
❱
2.2.1.
Smart Contract Risks
2.2.2.
Identifying Risks
2.2.3.
Prioritization
2.2.4.
Mitigation Strategies
2.2.5.
Risk Monitoring
2.2.6.
Educating & Collaborating
2.3.
Audits & Code Review
❱
2.3.1.
Routine Auditing
2.3.2.
Types of Audits
2.3.3.
Audit Process
2.3.4.
Peer Reviews and Collaborative Audits
2.3.5.
Schedule
2.3.6.
Post-Deloyment
2.4.
Code Quality & Security
❱
2.4.1.
Introduction to Code Quality
2.4.2.
Guidelines and Standards
2.4.3.
Avoiding Common Mistakes
2.4.4.
Smart Contract Best Pratices
2.5.
User Authentication & Access Control
❱
2.5.1.
Web3 Auth/AC
2.5.2.
Implementing Access Control
2.5.3.
Private Key Management
2.5.4.
User Interactions
2.5.5.
Upgrades and Access Control
2.5.6.
Access Control Common Vulnerabilities
2.5.7.
Auditing & Testing Access Control
2.6.
Data Security and Privacy
❱
2.6.1.
Significance of Data Security & Privacy in Smart Contracts
2.6.2.
Handling Sensitive Data
2.6.3.
Ensuring Data Integrity
2.6.4.
Privacy Concerns & Solutions
2.6.5.
Data Access Patterns & Gas Optimization
2.6.6.
Data Security & Smart Contract Upgrades
2.7.
Smart Contract Specific Security Measures
❱
2.7.1.
Best Practices in Smart Contract Development
2.7.2.
Handling Upgrades in Smart Contracts
2.7.3.
Proxy Patterns & Security
2.8.
Testing & Validation
❱
2.8.1.
Comprehensive Testing Strategies
2.8.2.
Testing Tools
2.8.3.
Unit Testing
2.8.4.
Static Analysis
2.8.5.
Fuzzing
2.8.6.
Invariant Analysis
2.8.7.
Formal Verification
2.9.
Incident Response & Recovery
❱
2.9.1.
Incident Response in a Web3 Context
2.9.2.
Preparation & Planning
2.9.3.
Detection & Analysis
2.9.4.
Containment~Eradication~Recovery
2.9.5.
Recovery & Post-Incident
2.9.6.
Legal & Regulatory Considerations
2.10.
Security in Decentralized Finance
❱
2.10.1.
Unique Security Challenges in DeFi
2.10.2.
Common Defi Vulnerabilities
2.10.3.
Security Best Practices in DeFi
2.10.4.
Governance & Administrative Functions
2.10.5.
Liquidity Pools & Staking
2.10.6.
User Education & Transparency
2.11.
Continuous Improvement
❱
2.11.1.
Staying Updated
2.11.2.
Training & Education
2.11.3.
New Tools & Practices
2.11.4.
Learning from Audits
2.11.5.
Engaging with Emerging Standards & Protocols
2.11.6.
Contributing to Open Source Communities
2.11.7.
Proactive Security Mindset
3.
Smart Contract Development
❱
3.1.
Smart Contract Fundamentals
❱
3.1.1.
Introduction to Smart Contracts
3.1.2.
Envisioning Contract Functionality
3.1.3.
Dependencies and 3rd Party Services
3.1.4.
Game Theory and Incentives
3.1.5.
Planning Upgrades and Incident Response
3.1.6.
Writing Smart Contracts
3.1.7.
Beta Testing
3.1.8.
Deployment
3.1.9.
Post-Deployment Monitoring and Incident Response
3.2.
Security Best Practices
❱
3.2.1.
Solidity Compiler Updates
3.2.2.
Code Simplicity & Clarity
3.2.3.
Libraries and Design Patterns
3.2.4.
Security Code Reviews
3.3.
Tools & Frameworks
❱
3.3.1.
IDEs and Security
3.3.2.
Development Frameworks
3.3.3.
Integrating Tools into Development
3.3.4.
Security Analysis Tools
3.3.5.
Automated Analysis
3.3.6.
Formal Verification Tools
3.4.
Testing and Verifications
❱
3.4.1.
Unit Testing
3.4.2.
Integration Testing
3.4.3.
Code Coverage
3.4.4.
Static Analysis
3.4.5.
Fuzzing
3.4.6.
Invariant Analysis
3.4.7.
Formal Verification
3.5.
Smart Contract Upgradeability
❱
3.5.1.
Smart Contract Upgradeability
3.5.2.
Separation of Data and Logic
3.5.3.
Version Control and Documentation
3.5.4.
Testing of Upgrades
3.5.5.
Authentication and Authorization
3.5.6.
Time Locks and Delays
3.5.7.
Emergency Pause Mechanism
3.5.8.
Post-Upgrade Audits
3.6.
Gas Optimization and Vulnerabilities
❱
3.6.1.
Balancing Efficiency and Security
3.6.2.
Common Pitfalls in Gas Optimization
3.6.3.
Advanced Techniques
3.6.4.
Specific Optimization Techniques
3.7.
Smart Contract Patterns and Anti-Patterns
❱
3.7.1.
Security Critical Control Flow Patterns
3.7.2.
State and Storage Patterns
3.7.3.
Access and Authorization Patterns
3.7.4.
External Interaction Patterns
3.7.5.
Defensive Patterns
3.7.6.
Optimization Patterns and Security Tradeoffs
3.7.7.
Anti-Patterns catalog
3.8.
Common Vulnerabilities
❱
3.8.1.
Solidity Language Pitfalls
3.8.2.
Reentrancy Family of Vulnss
3.8.3.
Arithmetic and Precision Vulns
3.8.4.
Access Control Failures
3.8.5.
Oracle and Price Manupulation
3.8.6.
Denial of Service
3.8.7.
Front Running and MEV Exposure
3.8.8.
Signature and Replay Issues
3.8.9.
Storage and Delegatecall Vulns
3.8.10.
Case Study Walkthroughs
3.9.
Audits for Developers
❱
3.9.1.
Internal Audit Process
3.9.2.
Preparing for an External Audit
3.9.3.
Selecting an Audit Path
3.9.4.
During the Audit
3.9.5.
Post-Audit Remediation
3.9.6.
Developers Pre-Audit Checklist
3.10.
Learning from Past Exploits
❱
3.10.1.
The Dao Hack
3.10.2.
The Parity Multi-Sig Hack
3.10.3.
The bZx Hack
3.10.4.
The Poly Network Hack
3.10.5.
The Ronin Bridge Hack
3.10.6.
The Nomad Bridge Hack
3.10.7.
The Wormhole Hack
3.10.8.
The Euler Finance Hack
3.11.
Advanced Contract Security
❱
3.11.1.
Oracles and External Data
3.11.2.
Cross-Contract Composability
3.11.3.
Maximal Extractable Value (MEV)
3.11.4.
Flash Loans as a Capital Primitive
3.11.5.
Cross-Chain and Bridge Security
3.11.6.
Governance Attacks
3.11.7.
Account Abstraction
3.11.8.
Layer 2 Considerations
3.12.
Emerging Trends
❱
3.12.1.
Formal Verification Advances
3.12.2.
AI and Machine Learning in Security
3.12.3.
Decentralized Auditing
3.12.4.
Post-Quantum Considerations
3.12.5.
Zero-Knowledge Proof System Security
3.12.6.
Non-EVM Execution Environments
3.12.7.
Security Standards and Frameworks
3.12.8.
Cyber Insurance and Economic Security
4.
Smart Contract Auditing
❱
4.1.
Intro to Web3 Auditing
❱
4.1.1.
Overview of Auditing
4.1.2.
Scope of Audits
4.1.3.
Target Audience
4.1.4.
Expectations and Limitations
4.1.5.
Ethical and Professional Standards
4.2.
Choices and Considerations
❱
4.2.1.
Audit Types
4.2.2.
Audit phases
4.2.3.
Audit Firms and Independent Auditors
4.2.4.
Decentralized Auditing and Bug Bounties
4.2.5.
Cost Considerations
4.2.6.
Guidlines on Audit Selection
4.3.
Preparation and Initialization
❱
4.3.1.
Audit Prerequisites
4.3.2.
Pre-Audit Checklist
4.3.3.
Code Walkthrough
4.3.4.
Communication Channels
4.4.
Audit Reports
❱
4.4.1.
Audit Report Components
4.4.2.
Audit Findings
4.4.3.
Recommendations and Remediations
4.5.
Auditor Basics
❱
4.5.1.
Auditors Toolbox
4.5.2.
Methodology and Approach
4.5.3.
Secure Contract Design Elements
4.5.4.
NatSpec
4.6.
Auditing Tools
❱
4.6.1.
Slither
4.6.2.
Mythril
4.6.3.
Echidna
4.6.4.
MythX
4.6.5.
Certora
4.6.6.
Foundry
4.7.
Smart Contract Testing and POCs
❱
4.7.1.
Unit Testing
4.7.2.
Integration Testing
4.7.3.
Creating Proofs-of-Concept
4.8.
Advanced Verification Methods: Fuzzing
❱
4.8.1.
Stateless vs Stateful Fuzzing
4.8.2.
Stateless Fuzzing with Foundry
4.8.3.
Stateful Fuzzing with Echidna
4.8.4.
Identifying Invariants in Smart Contracts
4.9.
Advanced Verification Methods: Formal Verification
❱
4.9.1.
Benefits and Limitations
4.9.2.
Tools for Formal Verification
4.9.3.
Real-World Applications
4.9.4.
Best Practices
4.9.5.
Challenges and Future Directions
4.10.
Master the EVM and Low-Level Programming
❱
4.10.1.
Data Structures in the EVM
4.10.2.
Yul and Inline Assembly
4.10.3.
Auditing Yul and Inline Assembly
4.10.4.
Analyzing Calldata
4.10.5.
The Huff Language
4.11.
Identifying Vulnerabilities
❱
4.11.1.
Understanding Business Logic
4.11.2.
Technical Review
4.11.3.
Developing Heuristics
4.11.4.
Common Smart Contract Vulnerabilities
4.11.5.
Timestamp Dependence
4.11.6.
Gas Vulns
4.11.7.
Denial of Service
4.11.8.
Re-entrancy Vulnerabilities
4.11.9.
Delegatecall
4.11.10.
math + integer_overflow / underflow
4.11.11.
Unchecked Return values
4.12.
Upgradeability Patterns and Vulnerabilities
❱
4.12.1.
Proxy Patterns
4.12.2.
Storage Layout and Collisions
4.12.3.
Initializer Pitfalls
4.12.4.
Malicious Upgrades
4.12.5.
Upgradeability Audit Checklist
4.13.
MEV and Front-Running
❱
4.13.1.
Mempool Basics
4.13.2.
Sandwich, Backrun, and JIT
4.13.3.
Commit-Reveal and Batching
4.13.4.
Private Mempools
4.13.5.
Auditor Heuristics for MEV
4.14.
Cryptography and Signatures
❱
4.14.1.
ECDSA and Signature Malleability
4.14.2.
EIP-191 and EIP-712
4.14.3.
Replay, Chain IDs, and Nonces
4.14.4.
Permit and Permit2
4.14.5.
BLS, Schnorr, and Precompiles
4.14.6.
Account Abstraction Signatures
4.15.
DeFi Security
❱
4.15.1.
DEXs: Uniswap V2/V3/V4 and Variants
4.15.2.
Lending: Aave, Compound, Morpho, Euler V2
4.15.3.
Perpetuals and Funding Rates
4.15.4.
Oracles: Chainlink, Pyth, TWAPs
4.15.5.
Flash Loans
4.15.6.
LSTs and LRTs
4.15.7.
Bridges and Cross-Chain Messaging
4.15.8.
Stablecoin Mechanics
4.16.
Case Studies: Lessons From Major Exploits
❱
4.16.1.
The DAO (2016)
4.16.2.
Parity Multisig (2017)
4.16.3.
bZx / Fulcrum (2020)
4.16.4.
Poly Network (2021)
4.16.5.
Ronin Bridge (2022)
4.16.6.
Wormhole (2022)
4.16.7.
Nomad Bridge (2022)
4.16.8.
Euler Finance (2023)
4.16.9.
Multichain (2023)
4.16.10.
Curve Re-entrancy (2023)
4.16.11.
Mixin (2023)
4.16.12.
Radiant Capital (2024)
4.16.13.
Munchables (2024)
4.16.14.
KyberSwap Elastic (2023)
4.17.
Continuing Education and Resources
❱
4.17.1.
Auditing Courses
4.17.2.
Certifications
4.17.3.
Online Channels, Communities, Forums
4.17.4.
More Resources
4.18.
Solidity-Specific Attack Vector Catalog
❱
4.18.1.
Access Control Pitfalls
4.18.2.
Reentrancy Variants
4.18.3.
Storage and Data Pitfalls
4.18.4.
Encoding and Low-Level Pitfalls
4.18.5.
Randomness and Entropy
4.18.6.
Source-Text and Compiler Pitfalls
4.18.7.
Historic Attacks
Light
Rust
Coal
Navy
Ayu
DF3NDR Web3 Security Books
The Nomad Bridge Hack