Core Viewpoint - The security of blockchain RWA (Real World Assets) systems is essential for protecting user assets and maintaining market trust, requiring a multi-layered defense system across five dimensions: smart contracts, underlying architecture, data interaction, compliance risk control, and operational management [1] Group 1: Smart Contract Security - Smart contracts serve as the "central nervous system" of RWA systems, and any vulnerabilities can lead to asset theft or rule failures [3] - Common risks include reentrancy attacks, overflow/underflow issues, loss of permissions, and oracle manipulation [5] - Code audits by third-party professionals and adherence to security development standards are crucial for mitigating risks [5] Group 2: Underlying Architecture Security - The choice and configuration of blockchain, along with network communication encryption, are vital for protecting the underlying architecture [4] Group 3: Data Security - Balancing on-chain data transparency with privacy is essential, utilizing techniques like data hashing and off-chain storage to protect sensitive information [4] - Redundant data storage and disaster recovery strategies are necessary to prevent data loss due to single points of failure [8] Group 4: Compliance and Risk Control - Establishing a legal compliance framework and business risk control mechanisms is critical for ensuring the system's integrity [7] - User protection clauses and monitoring for anti-money laundering (AML) and fraud are necessary to safeguard user interests [8] Group 5: Operational Security Management - Key and permission management, emergency response, and personnel security awareness are essential components of operational security [7] - A comprehensive security system must integrate technology, compliance, and operational practices to ensure user asset safety and market trust [7]