Service

Blockchain & Smart Contract Security

Security review of smart contracts and Web3 applications — access control, reentrancy, arithmetic, oracle dependencies, upgrade mechanisms and business-logic integrity.

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The problem

Why this assessment matters

Smart contracts hold assets under immutable code. A single access-control gap, reentrancy path or flawed incentive can drain value within one transaction — and there is no rollback. Logic mistakes that would be a medium-severity bug in conventional software become direct financial loss on-chain.

Scope

What We Test

Typical coverage for this assessment, tailored to your system during scoping.

  • Smart contracts
  • Access control
  • Reentrancy
  • Arithmetic issues
  • Oracle dependencies
  • Business logic
  • Upgrade mechanisms
  • Web3 integrations
Methodology

How the Assessment Runs

A consistent six-stage process — every stage produces something you can use.

  1. Discover

    Map contracts, roles, upgrade paths, external dependencies, oracles and off-chain components of the protocol.

  2. Assess

    Review code line by line against known vulnerability classes and protocol-specific economic logic, supplemented by static and symbolic analysis.

  3. Validate

    Reproduce high-impact issues in a forked or local test environment with a proof-of-concept transaction, where feasible.

  4. Report

    Deliver findings with code references, exploit scenarios, severity and concrete fixes.

  5. Remediate

    Support fixes, invariant design and test additions so regressions are caught by your own suite.

  6. Retest

    Review updated deployments or upgrade proposals against the original findings.

Example outcomes

Typical Findings

Realistic issue classes commonly discovered during this type of assessment. Your results depend on your system — we do not imply guaranteed findings.

  • Missing or bypassable access control on privileged functions
  • Reentrancy and unsafe external calls
  • Integer overflow / precision and rounding issues
  • Unchecked assumptions from oracles and price feeds
  • Business-logic flaws in rewards, fees and accounting
  • Unsafe upgrade and proxy administration
  • Signature replay, missing deadlines and permit abuse
  • Web3 frontend issues exposing users to transaction manipulation
What you receive

Deliverables

Everything needed to understand, prioritize and fix what we find.

  1. Contract and dependency inventory
  2. Findings with code references and exploit scenarios
  3. Severity assessment prioritized by fund risk
  4. Concrete remediation with suggested test coverage
  5. Retest of remediated contracts
Attack surface

Where Blockchain Security Fits in Your Attack Surface

The shared, data-driven attack-surface map — Blockchain Security is emphasised automatically. Select any node to see its assessment path, related systems and security objective.

Interactive 3D map of the security attack surface — Web, API, Mobile, Thick Client, Cloud, Internal, External, AI and Blockchain. Select a node to explore a service.

Interactive 3D map of the security attack surface. Select a node to see the service description, assessment path and related systems. A static list of all services is provided below.
  1. Discover
  2. Map
  3. Assess
  4. Validate
  5. Correlate
  6. Risk
  7. Evidence
  8. Remediate
  9. Retest
  • Assessment / attack path
  • Application / API
  • Identity / security core
  • Defensive
  • Critical risk
Fit

Who Needs This

Teams deploying DeFi protocols, marketplaces or token systems

Projects preparing a mainnet launch or upgrade

Organizations requiring security review before an audit-heavy fundraise

Any protocol where contract bugs carry direct financial loss

Questions

Frequently Asked Questions

Is this a substitute for a formal audit?

It is a security assessment and can stand alone or precede a formal audit. For high-value deployments we recommend layered review; we will be clear about what our scope does and does not cover.

Which languages and chains do you cover?

Primarily EVM-based contracts (Solidity/Vyper) and the surrounding Web3 stack. If your protocol uses another VM or chain, describe it during scoping and we will confirm coverage honestly.

Can you review an upgrade before deployment?

Yes. Upgrade and patch reviews before deployment are a common engagement type — we review the proposed change against the live system and prior findings.

Ready to test your application?

Start a scoping conversation about blockchain security for your systems.

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