Blockchain Infrastructure Security Audit — A blockchain infrastructure security audit reviews everything a chain or protocol runs on rather than what it runs — nodes, validators, sequencers, RPC endpoints, signing services, cloud accounts, CI pipelines and monitoring — because the majority of large losses begin with a key or a host rather than with a contract bug.
The industry spends most of its security budget on the layer that has caused a minority of its losses. Contract bugs are real and worth auditing, but the incidents that empty a treasury in one transaction usually start somewhere unglamorous: a signing key on a developer machine, a validator with an open admin RPC, a cloud role with more permissions than the task needed, a CI job that can deploy without review, or a monitoring stack that produced no alert because nobody had defined what an attack looks like.
This engagement audits that layer directly. We enumerate what is actually reachable rather than what the architecture diagram claims, review the identity and privilege model down to the individual role, examine how keys are generated, stored, used and rotated, and test whether the operational controls around your validators or sequencer behave the way your documentation says under adversarial conditions.
For teams running their own chain, rollup or appchain, this is where liveness and censorship risk live too. A single sequencer with no escape hatch, a validator set reachable through one cloud account, a bridge relayer whose credentials sit in an environment variable — none of these are code findings, and all of them are the reason an incident becomes unrecoverable.
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.
Because most large losses do not start in the contract. A compromised deployer key, an exposed admin RPC or a CI pipeline that can deploy unreviewed code will drain an audited protocol exactly as fast as an unaudited one, and no contract audit looks at any of them.
Yes — professional validators and staking operators are a regular engagement. The focus is key handling, double-sign protection, sentry design, failover, and the operational discipline around slashing risk.
Yes. Your provider secures their platform; your configuration, credentials, access policy, egress rules and monitoring remain yours, and that boundary is where most managed-service incidents happen.
Yes. Sequencer availability, censorship resistance, escape-hatch behaviour, key custody for the batch poster, and the operational path an attacker would use to halt or reorder — see also our Layer 2 security audit.
Reconnaissance and configuration review against production, intrusive testing against a mirrored staging environment, and anything disruptive only inside an agreed window with a named contact and a rollback plan.
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.