Business Communication
Project Evaluation
Pay for Expenses
Security Audit
Issue a Report
Blockchain Security Audit Scheme
For public chains and Layer 2 mainnets that are already live or about to launch, the audit focuses on the robustness of infrastructure protection, node distribution and disaster recovery, consensus reliability, and the resilience of core code against attacks. Historical audit records and regulatory compliance requirements are also considered to assess the mainnet security baseline and compliance status, resulting in a professional assessment report.
Source code security auditing adopts a "white-box" strategy and performs in-depth analysis of project source code. It typically combines automated static analysis with manual review to improve both coverage and precision.
The SlowMist team uses open-source or commercial code scanning tools for static analysis and manually reviews the findings. Supported mainstream languages include C/C++/Golang/Rust/Java/Node.js/C#.
The static analysis scope includes the following categories:
Unused variables or imports, inconsistent formatting, inconsistent naming, insufficient or outdated comments, poor readability, duplicated code, excessive complexity, poor testability, and design principle violations.
Improperly closed resources, memory leaks, deadlocks, race conditions, infinite recursion, improper exception handling, and performance issues.
Magic numbers, hard-coded constants, type conversion errors, divide-by-zero errors, null pointer dereferences, integer overflow, and floating-point precision issues.
SQL injection, XSS, string formatting vulnerabilities, buffer overflow, insecure random number generation, path traversal, TOCTOU-style time and state issues, and hard-coded keys or sensitive information.
High coupling, low cohesion, and outdated dependencies or dependencies with known security risks.
The SlowMist security team adopts a deep audit model combining "expert manual review + automated tool assistance" to analyze the underlying code line by line, accurately identifying potential coding defects and deep logic vulnerabilities. Our core audit scope comprehensively covers key dimensions of blockchain systems, mainly including:
Rigorously examining the implementation and application of signature algorithms, hash functions, random number generation, and encryption protocols to ensure the underlying cryptographic foundation is unbreakable.
Conducting in-depth checks for replay attacks, double-spending attacks, privilege escalation, and transaction malleability risks to ensure absolute security for user assets and on-chain interactions.
Strictly verifying interface authentication, input filtering, and rate limiting mechanisms to prevent malicious exploitation or DDoS attacks on node external interaction channels.
Evaluating node discovery and routing mechanisms, testing network isolation, and comprehensively preventing eclipse attacks and Sybil attacks.
Deeply analyzing the robustness of consensus algorithms (such as PoW/PoS/BFT, etc.), mitigating long-range attacks, fork vulnerabilities, and collusion among malicious nodes.
Reviewing architectural design defects, state machine anomalies, and various complex business layer logic vulnerabilities in conjunction with specific application scenarios and economic models.
The Common Vulnerability Scoring System (CVSS) is an open framework for describing the characteristics and severity of software vulnerabilities. CVSS includes Base, Temporal, and Environmental metrics: the Base metrics reflect intrinsic properties of the vulnerability, the Temporal metrics capture characteristics that change over time, and the Environmental metrics reflect the impact within a specific deployment context.
Based on the CVSS methodology, SlowMist further defines a vulnerability severity classification tailored to blockchain scenarios:
| Level | Description |
|---|---|
| Critical | Has a major impact on the security of the blockchain project and should be remediated immediately. |
| High | Significantly affects normal system operation and should be fixed as soon as possible. |
| Medium | Has a practical impact on project operation and should be scheduled for remediation. |
| Low | May affect system operation in specific scenarios and should be prioritized according to business context. |
| Weakness | Represents a theoretical security risk that is extremely difficult to reproduce in practice. |
| Suggestion | Does not necessarily constitute a direct vulnerability, but indicates better coding or architectural practices. |
| Information | Matches the intended design, but may still cause user asset loss or security misunderstanding under certain usage patterns. |
Blockchain Based Cryptocurrency Security Audit Guide: https://github.com/slowmist/Cryptocurrency-Security-Audit-Guide
Cryptography is the cornerstone of Web3 security. From private key generation to transaction signing, every step relies on the correct and secure implementation of cryptographic components. However, in the actual development of Web3 projects, development teams often focus on business logic and performance optimization while overlooking the subtle yet critical aspects of underlying cryptographic implementations. Using insecure random number generators, invoking cryptographic libraries incorrectly, or misunderstanding algorithm characteristics can all introduce fatal vulnerabilities — leading to private key leaks, signature forgeries, and ultimately irreversible asset losses.
Sui is an emerging high-performance blockchain platform that offers a range of innovative and unique features. It focus on providing fast and secure transaction experiences for various applications. For foundational knowledge about Sui, refer to Exploring Sui: The Technology Behind High Performance and Contract Security. Unlike commonly used blockchain programming languages like Solidity, Sui utilizes the Move language, which addresses many vulnerabilities frequently found in Solidity, such as reentrancy attacks, integer overflows, double-spending, DoS attacks, and compiler issues. However, developers can still introduce errors in their code, so it's crucial to understand and pay attention to some of Move's unique features to ensure the security of smart contracts.
Recently, we discussed the features and security issues of TON in our article “Introduction to TON: Account, Token, Transactions, and Asset Security.” Today, we delve into another emerging high-performance blockchain — Sui. Sui has garnered attention from developers and researchers alike due to its innovative technologies and unique features. It focuses on providing a fast and secure transaction experience suitable for various application scenarios. This article will cover Sui's account model, token management, transaction mechanisms, and asset security to help readers better understand the blockchain.

















































