Blockchain Security
Blockchain security testing, smart contracts, wallets, and non-custodial protocol-layer review.
Blockchain security splits into very different sub-disciplines depending on what you are building. A DeFi protocol, a custody platform, a wallet, and an NFT marketplace each have distinct threat models and review methodologies. Engagements are scoped accordingly, there is no single "blockchain audit".
We cover smart contract review on EVM-compatible chains, custodial-system security (key management, withdrawal flows, MPC architectures), wallet security (mobile, browser, hardware integrations), and protocol-layer review for non-custodial systems including bridges and oracles. Findings are mapped to recognised checklists (SCSVS, SWC) and to the engagement-specific threat model.
What's at stake.
Smart contract bugs are irreversible
Once deployed, exploited smart contracts cannot be patched in place. Pre-deployment review is the only meaningful defence for material contract value.
A structured, intelligence-led path through every engagement.
Every engagement follows the same disciplined path through the Velocity platform, so quality, traceability, and reporting are consistent across teams.
Scoping
Define assets, environments, Rules of Engagement, and acceptance criteria with the technical and security stakeholders.
Execution
Manual and tool-assisted testing by CREST-accredited consultants, with evidence captured at each step.
Validation
Every finding is reproduced, risk-rated under CVSS, and confirmed by a second consultant before reporting.
Reporting
Cryptographically signed reports with test-case traceability, severity ratings, reproduction steps, and remediation guidance.
Debrief & Retest
Stakeholder walk-through of findings, prioritisation support, and a retest cycle on remediated issues.
Mapped to recognised baselines.
Test Your Defences Against Adversarial Expertise
Talk to a CREST-accredited consultant about your next penetration testing engagement.