Blockchain Security Assessment — A blockchain security assessment is a structured evaluation of the security posture of a blockchain system or programme — architecture, threat model, controls, key management and operational readiness — producing a risk rating and a prioritised remediation plan, rather than the line-by-line code review that a code audit performs.
Assessment and audit are not synonyms, and institutional buyers usually need the assessment first. An audit answers "is this code correct?". An assessment answers "is this system, and the team operating it, safe enough for us to launch, invest in, integrate with or underwrite?" It is the engagement a risk committee, an investment committee or a regulator actually asks for, and it is the one that determines whether a code audit is even the right next spend.
We work top-down. First the architecture and the trust boundaries: what is on-chain, what is off-chain, who holds which keys, what happens when each component fails or lies. Then the threat model, built from your business model rather than from a generic list — a custodian, a stablecoin issuer and a games studio have almost nothing in common in their top three risks. Then the controls that are supposed to hold those risks down, tested against evidence rather than accepted from a questionnaire. Then the operational layer: monitoring, incident response, upgrade governance, and whether anyone would notice an attack in progress.
The output is a rated posture, not a list of opinions. Each finding carries a likelihood, an impact in terms your business already uses, an owner and a remediation sequence. Where a code-level review is warranted, we say so and scope it; where it is not, we say that too, which is frequently the more valuable answer.
We fix a commit hash, agree the in-scope contracts and read your architecture docs, then build a threat model: who the actors are, what the trust boundaries are, and which invariants must never break. Nothing is reviewed against assumptions we have not written down.
Line-by-line review by at least two auditors working independently, focused on authorisation, accounting, upgrade paths, external integrations and the gap between what the code does and what the documentation claims it does. Most critical findings come from this phase, not from tooling.
Static analysers appropriate to the language, plus property-based fuzzing and invariant testing to push the system into states no unit test covers. Tooling is used to widen coverage, never to replace the manual pass.
Candidate findings are proven on a forked network with a working proof of concept. We report what an attacker can actually do and what it costs them, not a theoretical severity label.
Every finding gets a severity rating, reproduction steps, the affected code, the impact in concrete terms and a specific remediation. You get a draft for discussion before anything is finalised.
We re-test every remediation against the original proof of concept and check that the fix has not opened a new path. The final report is yours to publish.
| Severity | What it means |
|---|---|
| Critical | Direct loss of funds or permanent freezing of assets, exploitable by any actor. |
| High | Loss of funds or protocol insolvency under realistic conditions, or requiring a privileged actor to misbehave. |
| Medium | Broken protocol behaviour, denial of service, or value leakage that does not directly drain the contract. |
| Low | Edge-case incorrectness with limited impact, or an issue requiring implausible preconditions. |
| Informational | Code quality, gas efficiency, documentation mismatch and defence-in-depth suggestions. |
Single token contract: starts from $999, report in 24–48 hours. dApp, GameFi or RWA project: starts from $2,999. DeFi protocol, L2 / rollup, Bridge, ZK circuit, AI agent / MCP: scoped per project after we have seen the code.
An assessment evaluates the whole posture — architecture, threat model, controls, key management and operations — and returns a risk rating with a remediation plan. An audit is a deep line-by-line review of specific code. The assessment tells you where the risk actually is; the audit then goes deep where it matters.
Risk and compliance functions at banks and financial institutions, investment committees doing pre-investment diligence, enterprises before a blockchain programme goes live, and protocol teams preparing for an institutional integration that requires evidence of posture.
Yes. The report is written so a non-engineer risk reader can act on it, with an executive summary, a rated finding register, evidence, and a residual-risk statement after remediation.
Yes — we routinely map to ISO 27001 control families, NIST CSF functions and internal control taxonomies so findings land in a register your team already uses. We provide the technical evidence; certification remains with your assessor.
Typically one to three weeks depending on the number of components and how much documentation exists. It is materially faster when architecture diagrams, key policy and runbooks already exist, and slower when we have to reconstruct them.
A repository or contract address, a commit hash to freeze the scope, whatever architecture or spec documentation exists, and a point of contact who can answer design questions. If documentation is thin we will write our understanding of the system back to you and ask you to confirm it — that step alone catches design-level bugs.
A single token contract is 24–48 hours. A typical dApp or mid-sized protocol runs one to two weeks. Large DeFi systems, L2s, bridges and ZK circuits are scoped per project after we have seen the code. We will give you a fixed timeline with the quote, not an estimate that moves.
Yes. Fix review is part of the engagement, not an upsell. We re-run the original proof of concept against your patched code and confirm the fix has not introduced a new path.
Send the repository and a commit hash through the contact form, message @bugtester25 on Telegram, or book a 30-minute scoping call. 200+ protocols audited · $4B+ secured · 0 hacks post-audit. Prefer email? info@safeedges.in.