With the vigorous development of the Linea ecosystem, on-chain security issues are becoming increasingly prominent. Not only hackers, but also insecure contracts, cross-chain bridges, and authorization mechanisms may pose risks to users' assets. This article provides a practical security self-checklist suitable for ordinary users and emerging projects, aiming to minimize the risk of asset loss.

1. Verify official information and contract addresses
Ensure to access the application through official channels and closely monitor Linea's official announcements. Before using any application, be sure to verify the authenticity of the contract address in the Linea block explorer, and avoid randomly clicking on suspicious links from search engines.

2. Review security audits and historical records
Check whether the project has a reliable third-party audit report, paying attention to the reputation of the auditing agency, the audit timeline, and whether the identified issues were promptly resolved. At the same time, review the contract creation time and interaction history, and be wary of any abnormal situations involving the receipt of large amounts of assets in a short period.

3. Be cautious with cross-chain operations
Cross-chain bridges are high-risk areas, prioritize official or industry-leading cross-chain solutions. Understand the bridge's multi-signature or multi-party governance mechanisms to enhance security. After cross-chain, it is recommended to conduct small tests first, rather than immediately investing all funds.

4. Reasonable Management of Authorization
For ERC-20 tokens, avoid using unlimited authorization. It is recommended to use precise amount authorization or to revoke and then authorize again. Regularly use tools like Revoke to clean up unnecessary authorizations and reduce potential risks.

5. Use hardware wallets and multi-signature
For frequent trading, it is strongly recommended to use hardware wallets to increase security levels. Consider implementing a multi-signature mechanism to provide additional protection for high-value assets.

By following these security guidelines, users can effectively mitigate potential risks while enjoying the innovations of the Linea ecosystem. Remember, in the fast-paced world of blockchain, staying vigilant and continuously learning are key to ensuring asset security.