Center of Excellence Security - Blockchain Penetration Testing

Test the Chain Before Hackers Do!

Simulated attacks uncover vulnerabilities across smart contracts, nodes, and protocols – before adversaries can exploit them.

Blockchain Penetration Testing at COE Security

COE Security’s Blockchain Penetration Testing service service delivers thorough, adversary-style assessments across your entire blockchain environment – from smart contracts and protocol modules to wallet integrations and node infrastructure. Our team simulates real-world DeFi attack scenarios, including oracle manipulation (leveraging low‑liquidity price feeds and flash‑loan distortion), reentrancy and gas‑based denial-of-service, bridge‑exploits, flash‑loan cascades, governance manipulation, and private‑key compromises. We blend automated framework testing with handcrafted exploit scripts to uncover vulnerabilities, then provide actionable, prioritized reports featuring proof‑of‑concept attacks and developer-ready remediation guidance. Testing can be triggered on every release, upon deployment of new modules, or scheduled continuously to monitor code changes, chain upgrades, and node deployments – ensuring ongoing integrity. We integrate seamlessly into CI/CD pipelines, enabling low‑impact in‑production assessments, expert validation, and real‑time developer feedback. The result: proactive defense against emerging threats, robust vulnerability management, and assurance your ecosystem remains secure, compliant, and ready for the dynamic challenges of Web3.

Our Approach

Define the scope of penetration testing, including smart contracts, bridges, wallets, nodes, and any custom blockchain modules.
Replicate your production environment in a secure lab to safely execute attacks and maintain integrity.
Map the architecture and threat landscape, identifying trust boundaries, dependencies, and attack surfaces.
Simulate real-world DeFi attack vectors, such as price oracle tampering, flash-loan manipulation, gas exhaustion, and governance exploits.
Use automated scanners and fuzzers to uncover common vulnerabilities, memory issues, and unsafe function calls.

Develop and launch manual exploit attempts against protocol logic to find deep logic flaws or business rule violations.
Test smart contract behavior dynamically, validating whether permission checks, access modifiers, and fail-safes work as intended.
Capture proof-of-concept payloads, transactions, or bytecode for each exploit to confirm their feasibility.
Compile a prioritized penetration test report with exploit paths, code-level findings, and developer remediation actions.
Retest fixes and integrate with CI/CD, enabling ongoing validation of contract and infrastructure security across release cycles.

Target Discovery

Exploit Simulation

On-Chain Exploit Validation

Secure Dev Feedback

Blockchain Penetration Testing Process

Our established blockchain penetration testing methodology delivers comprehensive testing and actionable recommendations.

Reconnaissance & Mapping

Threat Modeling

Active Exploitation

Post-Exploitation Simulation

Reporting

Why Choose COE Security’s Blockchain Penetration Testing?

Adversary Emulation – Simulate real-world tactics used by blockchain-focused threat actors.
Exploit Development – Go beyond automated scans with manually crafted exploits tailored to your architecture.
Layered Testing – Test everything from the smart contract layer to infrastructure, API, and user interface.
Red Team Blockchain Modules – Includes social engineering, phishing, and insider threat modeling.
Chain Re-org Simulation – Assess your system’s resilience against chain forks and consensus-based attacks.

Gas Optimization & Exploitability – Find excessive gas usage patterns that might signal inefficiencies or attack potential.
Access Control Testing – Check if admin, multisig, and role-based access systems are properly enforced.
Flash Loan & Oracle Attack Simulation – Emulate high-risk attack patterns affecting DeFi protocols.
Private Chain Risk Assessment – Audit consortium or enterprise chains for unique security gaps.
Comprehensive Reporting & Fix Recommendations – Detailed reports with clear action plans and dev team walkthroughs.

Five Areas Section of Blockchain Penetration Testing

Penetration Testing as a Service

Our Penetration Testing as a Service (PTaaS) provides continuous, on-demand security testing for thick client applications. Unlike web or mobile applications, thick client applications are often installed locally on users’ devices and have unique security concerns. With PTaaS, we simulate real-world attacks on your thick client apps, focusing on vulnerabilities such as insecure data storage, improper session handling, code injection, and client-side security flaws. Through regular and comprehensive testing cycles, we uncover hidden vulnerabilities that could be exploited by attackers, ensuring that your application is secure, resilient, and prepared for any potential threats.

Application Security Consulting

Our Application Security Consulting services are designed to integrate security into every phase of your thick client application development lifecycle. We work with your development team to identify potential security risks early and provide guidance on implementing best practices for secure coding, architecture, and testing. From securing data storage to hardening communication channels, our experts help you build a strong security foundation for your thick client applications. Additionally, we assist in conducting threat modeling, static code analysis, and risk assessments to ensure that your thick client apps are secure against both internal and external threats.

We also address risks unique to thick clients, such as local data exposure and reverse engineering. Our approach helps reduce rework, accelerates secure development, and ensures long-term application integrity.

Software Compliance Testing

Compliance with industry standards and regulations is essential, even for thick client applications. Our Software Compliance Testing service ensures that your thick client applications meet the required regulatory frameworks, including GDPR, HIPAA, PCI-DSS, and others. We conduct detailed assessments to ensure that your software adheres to security, data privacy, and accessibility standards. By performing thorough compliance testing, we help you identify any gaps or non-compliance areas that could lead to penalties, data breaches, or reputational damage. Our testing provides you with the assurance that your thick client application meets legal and regulatory requirements, minimizing legal and operational risks.

Secure Software Development Consulting

Secure development practices are crucial when building thick client applications to ensure that security vulnerabilities are mitigated during the development phase. Our Secure Software Development Consulting services guide your team in adopting secure coding techniques and integrating security into the software development lifecycle (SDLC). We provide hands-on support in threat modeling, secure architecture design, and vulnerability management, ensuring that your thick client applications are built with security in mind from the very beginning. By applying secure development practices, we reduce the risk of introducing security flaws, ensuring that your applications are resistant to exploits, such as buffer overflows, insecure deserialization, and privilege escalation.

Application Security Posture Management

Application Security Posture Management is a continuous, proactive approach to managing and improving the security of your thick client applications. We help you monitor your application’s security posture over time, ensuring that new vulnerabilities are quickly identified and mitigated. This includes regular vulnerability assessments, patch management, and threat intelligence integration to stay ahead of emerging threats. Our team provides ongoing support to address security gaps, track the effectiveness of security controls, and ensure that your application’s security posture is always up to date. By maintaining a strong security posture, we help you protect your thick client applications from evolving cyber threats.

Advanced Offensive Security Solutions

COE Security empowers your organization with on-demand expertise to uncover vulnerabilities, remediate risks, and strengthen your security posture. Our scalable approach enhances agility, enabling you to address current challenges and adapt to future demands without expanding your workforce.