The shift on-chain is happening. We take institutions from intent to assurance: secure, compliant, and ready for what comes next.
A New Financial Reality
Asset managers, custodians, payment processors, and sovereign wealth funds are moving capital on-chain. The convergence is happening now, and it is irreversible. Two security cultures, built on entirely different threat models, are now operating within the same infrastructure. Most blockchain security firms came from one side only. We came from both.
DORA, MiCA, VARA, and DASP are live mandates. Security is no longer a matter of what is responsible. It is a matter of what is legally required. We were built to operate at this intersection: institutional-grade security disciplines applied to on-chain infrastructure, for both DeFi protocols scaling toward adoption and traditional finance entering the space.
Institutions entering on-chain infrastructure represent a convergence never envisioned by the original Web3 architects. The security architecture to support it is being defined in real time.
DORA, MiCA, VARA, and DASP are live regulatory frameworks. Independent security reviews and documented operational resilience are now legal requirements, not best practice.
Our team carries experience from defence-grade critical infrastructure and leading blockchain smart contract security firms. Institutional disciplines. On-chain expertise. Applied together.
SERVICES
Real security spans people, processes, and technology, every layer of the attack surface, on-chain and off. Our adjusted PPT framework delivers end-to-end assurance across all three.
Your biggest attack surface isn't your code.
In 2026, DPRK-linked attackers posing as a quant trading firm first approached Drift Protocol contributors at crypto conferences. Over six months they deposited real capital, joined strategy calls, and attended global events to build genuine trust. That trust got Security Council members to blind-sign pre-staged transactions. Admin control transferred silently. $285 million drained in hours. Twenty partner protocols fell with it.
Security is a discipline, not a deployment.
In 2025, Bybit lost $1.5 billion after Lazarus Group compromised the Safe multi-sig interface. Three authorised signers approved what looked like a routine transfer. The malicious payload was hidden beneath a legitimate-looking UI. Blind signing is a broken process.
Secure the code. Protect the keys.
In 2022, Wormhole lost $320M in minutes. A deprecated Solana function, left callable after a code upgrade, let an attacker mint 120,000 wETH without depositing a single dollar. One missed line. No pre-deployment audit caught it.
PARTNERS
We work alongside rigorously vetted, specialist security firms and individual experts to deliver institutional-grade on-chain security services.
About
Founder & Lead Security Consultant
Built his career in cybersecurity across the defence sector, hardening some of the most demanding and hostile environments in existence. Defence-level security experience is exceptionally rare in the blockchain industry. Turning his attention to on-chain infrastructure, he recognised an industry moving billions through systems that had never been held to that standard. He founded Security4Web3 to change that.
Protocols secured by smart contract audit firms our team was part of.
Our Purpose
No other industry moves this volume of capital through infrastructure with so many unaddressed security gaps. We exist to change that.
In defence and traditional finance, one principle is absolute: end-to-end security is not optional. The consequences of a key compromise or a process failure are catastrophic. The same is true in blockchain, and the losses prove it.
The $1.46bn Bybit hack was not a smart contract exploit. It was a signing key compromise. The $625m Ronin Bridge breach was a private key theft. Operational failures. Not exotic attack vectors. The disciplines to prevent them exist. Most protocols simply never applied them.
In 2024, 303 exploits were recorded across Web3. Of those, the incidents involving access control failures accounted for the largest share of total losses by value. The technical surface is only part of the problem. The operational layer is where most capital has actually been lost.
8 in 10 institutional leaders we spoke to said they felt out of their depth when it comes to securing their on-chain infrastructure.Start a Conversation →
Every significant breach had the potential to be prevented. We work proactively: before deployment, before mainnet, before an adversary identifies the vulnerability first. AI-assisted reconnaissance now enables attackers to surface and exploit weaknesses at a pace that demands early, structured intervention.
Traditional cybersecurity experience at the defence level is exceptionally rare in the blockchain world. The threat models are different. The consequence tolerance is lower. The disciplines are more rigorous. That perspective changes how you approach on-chain infrastructure entirely.
Smart contract bugs get the headlines, but operational failures often get the billions. A complete security posture covers both the code and the people running it.
Regulatory Compliance
The regulatory landscape for digital assets is maturing fast. Traditional institutions demand regulatory clarity before committing capital on-chain. Blockchain-native firms scaling toward institutional adoption need to demonstrate it. Our security reviews are structured to evidence compliance with the frameworks that matter.
Digital Operational Resilience Act
Mandates ICT risk management, incident classification and reporting, digital operational resilience testing (TLPT), and third-party provider oversight for financial entities operating within the EU. In force from January 2025.
Markets in Crypto-Assets Regulation
Establishes authorisation, governance, and operational resilience requirements for crypto-asset issuers and CASPs. Includes obligations around cybersecurity, business continuity, and security of client assets. Fully applicable from December 2024.
Virtual Assets Regulatory Authority
Dubai's dedicated regulatory authority for virtual asset service providers. VARA requires robust cybersecurity frameworks, formal technology governance, regular independent security assessments, and documented incident response procedures.
Digital Assets Service Provider
El Salvador's CNAD registration regime for digital assets service providers under the Bitcoin Law and Digital Assets Issuance Law. Requires documented security policies, operational controls, secure custody procedures, and evidence of regular independent security testing as part of the authorisation dossier.
Answers for Decision-Makers
The questions institutions and security leads ask us before engaging, and the answers that inform confident decisions.
Yes. Our reviews generate the documented evidence regulators require. DORA mandates operational resilience testing and ICT risk frameworks. MiCA requires cybersecurity controls and business continuity plans. VARA demands regular independent assessments. DASP (El Salvador's CNAD regime) requires documented security policies and testing evidence. Our reports satisfy all four, whether you are seeking authorisation or preparing for a competent authority audit.
Security4Web3 is a specialist security consultancy. We are making institutional-grade security accessible to all.
Services are delivered through our internal consultancy team and a curated network of specialist partner firms and individuals we have rigorously vetted for technical depth, professional standards, and integrity. In a space where it is genuinely difficult to assess who can be trusted, that vetting is part of the value we provide. Across all three security pillars, our focus is prevention before incidents occur.
Our Operational Security Reviews cover private key and seed phrase management, multi-sig wallet configuration, insider threat assessment, social engineering risk, secure key ceremony design, and incident response planning. You receive a full written report with risk ratings and prioritised remediation steps.
A smart contract audit is a deep code review that identifies vulnerabilities in your on-chain logic before deployment: static analysis, business logic flaws, and economic attack surfaces. A penetration test goes further by actively simulating real attacks against your live infrastructure, frontend, APIs, and protocol to find exploitable weaknesses under realistic conditions.
Private key compromise accounts for the majority of significant losses. The Bybit hack ($1.46B) and Ronin Bridge exploit ($625M) were both rooted in compromised signing keys, not code vulnerabilities. Other recurring failures: insufficient segregation of duties in signing workflows, legacy IT systems connected to on-chain infrastructure, and absent API/RPC security coverage. Not exotic risks. Preventable ones.
Internal security functions are essential. On-chain security requires expertise that very few conventional teams possess. Smart contract logic, on-chain transaction finality, and DeFi protocol interactions are fundamentally different from the threat surfaces your team is accustomed to reviewing. Beyond capability, regulators and boards require third-party assurance that cannot be self-certified. Our reports deliver documented, independent evidence of security controls, suitable for regulatory submissions and governance review.
Typically we can begin an initial scoping call within 48 hours of your enquiry. Timelines for full engagements depend on scope. OpSec reviews can be completed in 1–2 weeks, audits and pentests in 2–4 weeks. Reach out via the contact form or Telegram and we'll confirm availability promptly.
Follow us on X and LinkedIn for on-chain security intelligence, threat analysis, and regulatory developments across digital asset markets.
Not found what you need? Speak directly with our team. We respond to all serious enquiries within 24 hours.
Get in TouchContact
Whether you are exploring your first on-chain move or hardening an existing operation, we are ready to help. Reach out and we will respond promptly.
