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2026 Web3 Security Checklist

2026 Web3 Security Checklist

· 2 min read
AutoSec Team
AutoSec Team
Web3 Security Researchers

A comprehensive Web3 security checklist to help developers and users enhance security awareness.

Developer Checklist​

Smart Contract Development​

  • Use the latest version of Solidity.
  • Follow the Checks-Effects-Interactions pattern.
  • Implement access controls.
  • Add event logging.
  • Write comprehensive test cases.

Security Audits​

  • Static analysis tool scanning.
  • Third-party security audits.
  • Bug bounty program.
  • Fuzz testing.
  • Formal verification (for critical contracts).

Pre-Deployment​

  • Thorough testing on testnets.
  • Prepare emergency pause mechanisms.
  • Set up monitoring and alerts.
  • Prepare an incident response plan.
  • Complete documentation.

User Checklist​

Wallet Security​

  • Use hardware wallets for storing large amounts of assets.
  • Backup seed phrases (store offline).
  • Enable wallet security features.
  • Regularly update wallet software.
  • Diversify risk using different wallets.

Transaction Security​

  • Verify website URLs.
  • Check contract addresses.
  • Understand transaction content before signing.
  • Set reasonable slippage tolerance.
  • Test new protocols with small amounts.

Daily Habits​

  • Avoid transacting over public WiFi.
  • Regularly review authorizations.
  • Follow official project announcements.
  • Stay updated on the latest security knowledge.
  • Maintain a skeptical attitude.

Project Team Checklist​

Security Operations​

  • Establish a security team.
  • Conduct regular security training.
  • Implement a bug bounty program.
  • Prepare an incident response process.
  • Purchase security insurance.

User Education​

  • Provide security usage guides.
  • Warn about common scam methods.
  • Establish official communication channels.
  • Timely release security announcements.

Emergency Response​

When a Vulnerability is Discovered​

  1. Immediately pause the contract (if such functionality exists).
  2. Notify users.
  3. Contact the security team.
  4. Prepare a remediation plan.
  5. Communicate transparently.

When Assets are Stolen​

  1. Immediately transfer remaining assets.
  2. Report to relevant platforms.
  3. Contact law enforcement.
  4. Track fund flows.
  5. Summarize lessons learned.

Conclusion​

Security is an ongoing process that requires the joint effort of all participants. Regularly review and update this checklist to stay vigilant.