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Blockchain & Web3 Penetration Testing Services

Most catastrophic Web3 losses were not caused by a flaw in Solidity.

The Ronin Bridge breach — roughly $625M — began with compromised validator private keys obtained through targeted social engineering. The Harmony Horizon bridge loss came from a compromised multisig. Repeatedly, the money leaves through infrastructure, keys, and operational access — not through a subtle reentrancy bug in an audited contract.

That is the gap Bluefire Redteam closes. We are an offensive security firm applying full-scope penetration testing and adversary simulation to blockchain systems — the nodes, RPC endpoints, bridges, custody, admin keys, APIs, and dApp frontends that a code audit never touches.

Get a Web3 scope and quote in 24 hours

Tell us your stack and architecture. We’ll return a scoped test plan and quote within one business day — testnet-first, with mainnet rules of engagement agreed in writing.

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Mustad

Blockchain Penetration Testing vs Smart Contract Audit

These are different engagements, and conflating them is the most expensive mistake in Web3 security budgeting.

 Smart Contract AuditBlockchain Penetration Testing
FocusOn-chain contract source codeThe full system: on-chain and off-chain
MethodManual code review, static analysis, formal verificationAdversary simulation, exploitation, infrastructure testing
Typical scopeSolidity/Rust contract logicNodes, RPC, bridges, keys, custody, APIs, frontend, admin paths
FindsReentrancy, access control, arithmetic, proxy flawsKey compromise paths, exposed RPC, validator weaknesses, privilege escalation, frontend hijack
Answers“Is this contract code correct?”“Can an attacker take the funds?”

A clean audit report and a secure protocol are not the same claim. You need both. If you have already audited your contracts, penetration testing is the missing half — and it is the half that most large exploits have historically walked through.

Our Blockchain & Web3 Security Services

Smart Contract Penetration Testing

Exploitation-led testing of deployed contract logic: access control and privilege boundaries, upgradeable proxy patterns, oracle dependency and manipulation, economic and MEV-related abuse, signature and replay handling. We validate exploitability, not just theoretical presence.

Node & RPC Infrastructure Testing

Validator and full-node hardening, exposed or unauthenticated RPC endpoints, JSON-RPC method abuse, peer-layer exposure, consensus client configuration, and the cloud infrastructure the node estate runs on. This is standard attack surface that pure audit firms do not assess.

Bridge & Cross-Chain Security Assessment

Validator set and threshold-signature schemes, message verification and proof validation, relayer trust assumptions, and the operational key management behind them. Bridges concentrate value and trust — they deserve testing proportional to what they hold.

Custody, Key Management & Multisig Review

Hot and cold wallet architecture, HSM and MPC deployment, signer device security, multisig threshold design, and the human process around signing. We assess whether a determined attacker — or a compromised insider — can reach signing authority.

dApp & Web3 Frontend Testing

Frontend hijack and supply-chain risk, wallet connection and transaction-signing flows, blind-signing and approval abuse, DNS and hosting compromise paths, and the conventional web vulnerabilities that still affect Web3 interfaces.

Web3 API & Off-Chain Service Testing

Indexers, subgraphs, backend services, admin panels, and the off-chain infrastructure that quietly holds privileged capability.

Web3 Red Team Assessment

Objective-based adversary simulation against your organisation as a whole — targeted phishing of key holders and engineers, cloud and CI/CD compromise, insider-threat scenarios. This is how the Ronin-class breaches actually happened.

How We Test Without Putting Funds at Risk

Testnet and fork-first

Exploitation is developed and validated against testnets, mainnet forks, and local simulation environments. We reproduce state faithfully without touching live value.

Any mainnet interaction is explicitly scoped, approved in writing, value-capped, and executed from controlled accounts. No unapproved transaction ever originates from our testing.

We prove exploitability to the point of demonstration and stop. Proof of concept, not proof of theft.

If we identify an actively exploitable, funds-at-risk issue mid-engagement, we escalate immediately through a pre-agreed emergency contact path — before continuing any other testing.

Findings are disclosed to you alone, under NDA, with coordinated timelines agreed before publication or remediation announcements.

Get a Web3 scope and quote in 24 hours

Testnet-first methodology. Written mainnet rules of engagement.

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Chains and Stacks We Test

  • EVM ecosystems — Ethereum, Polygon, BNB Chain, Avalanche, and L2s including Arbitrum, Optimism, and Base
  • Solidity and Vyper contract environments
  • Rust-based chains — Solana and comparable ecosystems
  • Cosmos SDK and Substrate/Polkadot application chains
  • Layer 2 and rollup infrastructure — sequencers, provers, and bridge contracts
  • Exchange, custody and tokenisation platforms, including regulated environments

If your stack is not listed, ask. Scoping is architecture-led, not template-led.

Standards and Frameworks

Findings are mapped to recognised Web3 and offensive security standards so your team, your investors, and your auditors can act on them:

  • OWASP Smart Contract Top 10
  • Smart Contract Security Verification Standard (SCSVS)
  • SWC Registry classification
  • OWASP Web Security Testing Guide and API Security Top 10 for off-chain components
  • MITRE ATT&CK for red team and infrastructure findings

What You Receive

  • Executive summary — risk in financial and operational terms, suitable for founders, investors, and exchange listing requirements
  • Exploit narrative — the full path an attacker would take, with reproducible proof of concept
  • Findings by severity and exploitability — prioritised by realistic value at risk, not raw CVSS
  • Remediation guidance — specific and implementable, written for your engineers
  • Free retest of remediated findings
  • Public summary letter — an optional, shareable attestation for your community and counterparties
  • Engineering debrief — live walkthrough with your development team

Sample reports available under NDA.

Blockchain Penetration Testing Cost

Cost is driven by contract complexity, infrastructure footprint, and whether custody or red team components are in scope.

Engagement TypeTypical Cost
Smart contract penetration test (focused scope)$8K – $20K
dApp + frontend + API assessment$15K – $30K
Full-stack Web3 assessment (contracts + infra + custody)$30K – $60K
Web3 red team with key-holder targeting$50K – $100K+

Most teams start with a full-stack assessment before a mainnet launch or a major protocol upgrade, then move to a recurring cadence as TVL grows.

Frequently Asked Questions - Block chain pentest

  • No. An audit reviews contract source code. Penetration testing attacks the whole system — nodes, RPC, bridges, keys, custody, APIs, and frontends — to determine whether funds can actually be taken. Most large Web3 losses originated outside contract code.
  • Exploit development happens on testnets and mainnet forks. Any mainnet action is separately scoped, value-capped, and approved in writing before execution.
  • Yes — arguably more than before. An audit tells you the code is sound. It does not tell you whether your validator keys, admin multisig, RPC infrastructure, or engineers can be compromised. That is where the large breaches happened.
  • A focused contract test runs 1–2 weeks. A full-stack Web3 assessment runs 3–5 weeks. A Web3 red team runs 6–10 weeks.
  • Yes, and this is the ideal time. Pre-launch testing on testnet carries no live-funds risk and findings are far cheaper to remediate before deployment.
  • Yes. We can issue a shareable summary attestation alongside the confidential technical report.

  • Always, before scoping begins.

Talk to a Web3 security specialist

Scoped test plan and quote within 24 hours. NDA first, always.

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