We architect and deploy custom Solidity and Rust smart contracts that are secure by design. Every contract undergoes rigorous audits and formal verification to protect your assets and users.
LABS
Services
Payment Gateway Security Penetration Testing
Offensive security testing that simulates real-world attacks on your live payment gateway smart contracts, APIs, and infrastructure to identify and remediate critical vulnerabilities before attackers do.
Chainscore © 2026
overview
CORE SERVICE
Custom Smart Contract Development
Secure, production-ready smart contracts built by Web3 experts to power your protocol.
- From Concept to Mainnet: Full lifecycle development, from initial design and
Hardhat/Foundrytesting to gas optimization and final deployment. - Protocol Specialization: Expertise in
ERC-20,ERC-721,ERC-1155, staking mechanisms, automated market makers (AMMs), and cross-chain bridges. - Guaranteed Quality: Adherence to OpenZeppelin standards and comprehensive test coverage for 99.9%+ reliability.
Deploy a battle-tested MVP in as little as 2-3 weeks, with ongoing maintenance and upgrade management included.
key-features-cards
PROVEN FRAMEWORK
Our Offensive Security Testing Methodology
We apply a structured, intelligence-led approach to simulate real-world attacks, identifying critical vulnerabilities before they are exploited. Our methodology is trusted by leading FinTechs to secure billions in transaction volume.
01
Reconnaissance & Threat Modeling
We map your payment gateway's entire attack surface, including APIs, smart contracts, and third-party integrations. This intelligence-led scoping ensures we test the most critical paths an attacker would target.
100%
Attack Surface Mapped
OWASP
Framework
02
Automated & Manual Vulnerability Discovery
Combining industry-leading SAST/DAST tools with expert manual penetration testing to uncover logic flaws, business logic bypasses, and zero-day vulnerabilities that automated scanners miss.
2000+
Test Cases
Manual
Expert Review
03
Exploitation & Impact Analysis
We safely exploit identified vulnerabilities to demonstrate real-world impact, such as fund theft, transaction manipulation, or data exfiltration, providing clear evidence of risk severity.
CVSS v3.1
Scoring
POC
Proof of Concept
04
Remediation Guidance & Retesting
Receive actionable, developer-friendly remediation advice with code snippets and configuration fixes. We perform free retesting to verify all critical issues are resolved before sign-off.
48h
Report Delivery
Guaranteed
Verification
05
Compliance & Reporting
Detailed reports align with PCI DSS, SOC 2, and ISO 27001 requirements, providing the audit trail needed for regulatory compliance and stakeholder assurance.
PCI DSS
Aligned
Executive & Technical
Report Versions
06
Continuous Security Monitoring
Optional ongoing monitoring of your production environment for new threats and vulnerabilities, ensuring your payment gateway remains secure as it evolves.
24/7
Monitoring
Real-time
Alerts
benefits
COMPREHENSIVE SECURITY AUDIT
Secure Your Gateway, Protect Your Business
Our penetration testing goes beyond automated scans. We simulate real-world attacks to identify and remediate critical vulnerabilities before they impact your revenue or reputation.
01
Smart Contract & Protocol Security
In-depth manual review of your payment logic, token bridges, and escrow mechanisms. We identify reentrancy, oracle manipulation, and access control flaws that automated tools miss.
100%
Manual Code Review
OWASP Top 10
Coverage
02
Infrastructure & API Penetration Testing
Attack simulation targeting your gateway APIs, admin panels, and cloud infrastructure. We test for injection flaws, authentication bypass, and DDoS resilience to secure your core services.
Full Stack
Testing Scope
Zero-Day
Simulation
03
Compliance & Regulatory Alignment
Security assessments aligned with PCI DSS, SOC 2, and financial regulations. We provide actionable reports to satisfy auditor requirements and build trust with partners and users.
Audit-Ready
Reports
PCI DSS
Framework
04
Post-Audit Remediation Support
We don't just hand you a report. Our team provides detailed remediation guidance, code patches, and re-testing to ensure all critical vulnerabilities are fully resolved.
Guided
Fix Implementation
Verification
Re-Testing
Choose Your Security Coverage
Comprehensive Testing Scope & Deliverables
Our tiered penetration testing packages are designed to match the scale and risk profile of your payment gateway. Each tier includes a detailed report, vulnerability remediation guidance, and a final verification scan.
| Security Assessment | Starter | Professional | Enterprise |
|---|---|---|---|
Smart Contract & Protocol Audit | |||
Frontend & API Penetration Testing | |||
Infrastructure & Node Security Review | |||
Economic & Governance Attack Simulation | |||
Report & Remediation Guidance | |||
Remediation Support & Re-testing | 1 round | 2 rounds | Unlimited |
Response Time SLA for Critical Issues | 48h | 24h | 4h |
Executive Summary & Compliance Evidence | Basic | Detailed | Detailed + Attestation |
Post-Audit Consultation | 1 hour | 4 hours | Ongoing |
Typical Engagement Timeline | 1-2 weeks | 2-4 weeks | 4-6 weeks |
Starting Price | $15,000 | $45,000 | Custom Quote |
process-walkthrough
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
We architect and deploy custom smart contracts that form the backbone of your Web3 product. Our development process is built on security-first principles, utilizing OpenZeppelin libraries and comprehensive audit trails to mitigate risk from day one.
From tokenization to complex DeFi logic, we deliver contracts that are gas-optimized, upgradeable, and ready for mainnet.
- Token Systems:
ERC-20,ERC-721,ERC-1155with custom minting, vesting, and governance modules. - DeFi & DEX: Automated Market Makers (AMMs), liquidity pools, staking, and yield farming contracts.
- Enterprise Logic: Multi-signature wallets, access control, and compliance-ready
Soulbound Tokens(SBTs). - Full Audit Support: We prepare your code for third-party audits and provide remediation guidance.
Comparison for CTOs & Security Leads
Payment Gateway Security: Chainscore vs. Alternatives
A technical comparison of penetration testing services for blockchain payment gateways, focusing on security depth, response capabilities, and total cost of ownership.
| Security Feature / Metric | DIY / Freelancer | Generic Security Firm | Chainscore Labs |
|---|---|---|---|
Smart Contract & Protocol Audit | |||
Frontend & API Penetration Testing | |||
Economic & MEV Attack Simulation | |||
On-Chain Monitoring & Alerting | |||
Remediation Support & Re-audit | Ad-hoc | Limited | Guaranteed |
Average Time to Report | 2-4 weeks | 10-14 days | 5-7 business days |
Critical Issue Response SLA | None | 48-72 hours | 4 hours |
Team Blockchain Experience | Variable | Limited | 10+ years avg. |
Typical Project Cost | $3K - $10K | $15K - $50K | $25K - $75K+ |
Post-Audit Support Term | None | 30 days | 90 days minimum |
Expert Insights
Penetration Testing FAQs for Payment Gateways
Get clear answers to the most common questions about our specialized security testing for payment processing systems.
We follow a hybrid methodology combining OWASP ASVS, PCI DSS requirements, and our proprietary threat models for financial systems. Our process includes: 1) Reconnaissance & Threat Modeling, 2) Automated & Manual Vulnerability Scanning, 3) Business Logic & Payment Flow Testing, 4) API & Cryptography Review, and 5) Detailed Reporting & Remediation Guidance. We simulate real-world attacker scenarios specific to payment data exfiltration, transaction manipulation, and fraud.
ENQUIRY
Get In Touch
today.
Our experts will offer a free quote and a 30min call to discuss your project.
NDA Protected
Confidentiality24h Response
Time to ValueDirectly to Engineering Team
No Sales Fluff10+
Protocols Shipped
$20M+
TVL Overall