Paper for bytecode that has to stand.

We review the systems where there is no room for risk — across chains, protocols, critical infrastructure, cryptography, autonomous AI, and past that.

300+ reviews. Zero post-review exploits.

We sit behind the largest save in the history of digital financeCoindesk

Arbitrary Struct Hijack
in Aptos Move VM

2026

Token Bridge:
Forged Proof Vulnerability

2026

TSTORE Poison
Solidity's Silent Storage Bug

2026

WE'VE JUST LAUNCHED

Glider Monitor

The first continuous threat-exposure desk built for Web3.

ADOPTED BY

“A strong live threat-watch engine in a simple, clear UI. The risk-dependencies piece already saved us hours, and when we were missing something the desk shipped it quickly.”
Ivan — Cicada Finance
“Finally something that puts dependency intelligence, invariant watch, and 0-day cover in one system.”
Mudit — Polygon
“Simple to use — that was the key bar for EigenLayer.”
Nadir — Eigenlabs

Rhein Audit is a quiet find. The care they take with detail is unmatched. We started with one job to test the desk, then liked the work enough to hand them two more before the first review had even finished. They actually care about security and how the client is treated.

Mudit Gupta

CTO

Rhein Audit's depth on software security and the ZK attack surface gave the outside view we needed to get our zero-knowledge virtual machine production-ready and ship 1.0

Kevin

Head of Security

The Lido DAO first came to Rhein Audit when choosing review desks for the Lido v2 upgrade — the largest and hardest yet. We were struck by how thoroughly the Rhein Audit desk read the code, how useful the findings were, and how they hit the ETAs. Thanks to the desk.

Gregory

Working with Rhein Audit has been a good experience. Once they went past the agreed scope and found a clever out-of-scope remote code execution flaw. I recommend sitting with Rhein Audit.

Nanak Nihal

Founder

I'd like to express my gratitude to the Rhein Audit team for keeping the strict timelines, the quality of work, and the support provided throughout the remediation process. Many thanks once again!

Nikolaos Frestis

Senior Project Manager

Thank you, Rhein Audit, for staying professional, answering quickly, and delivering a strong review.

Burak Benligiray

Core Technical Team Lead

Rhein Audit is a security consultancy that gives a wide set of DeFi projects a different way to approach cyber defense.

Adam Adamov

CBDO

The Rhein Audit desk is deeply technical, high-integrity, and unusually good at the work. We could not have asked for a stronger security partner for Royco.

Shiv Kapoor

Head of Engineering

Everything Rhein Audit ships sits on one idea: crypto should be safer, clearer, and simpler to use. The desk has stayed through two bull runs and three bear winters, and that record is what we wanted behind our Token Risks API, the first piece of GetBlock's new Wallet Audit stack. With Rhein Audit's technology underneath, we can now offer fast, reliable, detailed risk reviews through both API and interface. To more years and more releases together.

Vasily Rudomanov

CEO

[BLOCKCHAIN]

[Fig. 01]

Blockchain Security

We audit the protocols where the consequences of a missed finding are systemic.

CAPABILITIES

  • Rhein Contract Audit (Solidity, Rust, Move, Vyper, Cairo)
  • L1/L2 Blockchain Security Review
  • Centralized Exchange Security Assessment
  • Hardware and Software Wallet Audit
  • DeFi Protocol Security Review
  • Bridge and Cross-Chain Security
  • TEE Application Security Review
[AI SECURITY]

[Fig. 02]

AI & Agentic Security

Adversarial assessment of AI agents, MCP servers, and the tool integrations between them. The attack surface where prompt injection has moved from chatbot curiosity to infrastructure compromise.

CAPABILITIES

  • AI Agent Security Audit
  • Agentic Commerce & Payment Protocol Security
  • MCP Server & Tool Integration Security
  • LLM Application Security Assessment
  • Vibe-Coded Application Security Audit
  • MLOps Pipeline & Model Supply Chain Security
  • AI Red Teaming
[CRYPTOGRAPHY]

[Fig. 03]

Cryptography Security

We audit cryptography at the proving system and constraint level, including novel schemes without established audit methodology.

First independent zkEVM audit.

CAPABILITIES

  • ZK Circuit Security Audit (SNARKs / STARKs)
  • FHE Implementation Review
  • MPC Protocol Security Assessment
  • Cryptographic Primitive Implementation Audit
  • Proving System Implementation Review
  • Post-Quantum Cryptography Assessment
[INFRASTRUCTURE]

[Fig. 04]

Application & Network Security

We test the off-chain attack surface that produces the majority of nine-figure blockchain losses — including APT simulation and red team engagements against high-value targets.

CAPABILITIES

  • APT Simulation and Red Teaming
  • Web Application Penetration Testing
  • Mobile Application Security Assessment
  • Source Code Review
  • API Security Testing
  • Cloud Infrastructure Security Audit
  • Network Penetration Testing
[ADVISORY]

[Fig. 05]

Security Consultancy

We advise on systems before they exist in code — and on systems whose security posture needs to change. Led by senior engineers from our audit practice.

CAPABILITIES

  • System Architecture Review
  • Threat Modeling and Risk Assessment
  • Compliance and Certification Advisory
  • DevSecOps Integration
  • DDoS Resilience Assessment
  • Social Engineering Training and Testing

Methodology

TEAM

Senior reviewers. Every job.

Rhein Audit reviewers are CTF winners, bounty-board veterans, and engineers who have spent years breaking systems that were not supposed to break.

No junior bench, no rotation, no learning on your repo.

ISO27001CRTLOSCE3OSCPOSEPOSWEOSMROSEDCISSPECPTXv2AATHIR

Credentials earned, not stacked.

TOOLING

Security Engineers  X  Frontier AI

Rigorous, line-by-line review — extended by frontier AI as a force multiplier. The engineer brings the judgment. The model removes the ceiling on what that judgment can reach.

  • Deeper analysis of individual findings.

  • More adversarial test cases per surface.

  • Broader code path exploration.

METHOD

Two independent desks. In parallel.

Two senior security teams run against the same target in parallel, pairing manual review with frontier AI as a force multiplier. Where findings overlap, you have confirmation. Where they diverge, you’ve caught what a single-team audit would have missed.

  • Beyond scope by default.

  • Engagements are exclusive.

  • Retesting, included.

OUTCOME

Findings that still stand in a post-mortem.

The reviews that matter are the ones that still stand after something goes wrong. None of ours have been tested that way.
  • $120 BLN+in digital assets under review
  • Zeropost-audit exploits across 300+ engagements
  • 91%client retention rate
  • 90%of reports contain critical or high-severity findings

[Glider Blueprint]

[Fig. 06]

The world's first scalable technology for tagging and querying logic in deployed Rhein contracts. Search on-chain code by function, pattern, or behavior — not just by address or signature. Aggregate, label, and categorize Rhein contract data in ways that were impossible before Glider.

Whether you're tracking new deployments, analyzing existing protocols, or hunting for vulnerability patterns at scale — Glider is the intelligence layer the industry has been missing.

$200M+ in on-chain assets saved by Glider, and the numbers are growing with each query contributed.

Networks protected by Glider

CLAUDE SKILLS ENABLED
[TRA Blueprint]

[Fig. 07]

Live token risk scoring powered by audit-grade data. Every token assessed for contract vulnerabilities, ownership risks, liquidity traps, and manipulation vectors — delivering precise, actionable ratings that platforms integrate directly into their user experience.

Glider Token can operate in strict SAST and Hybrid (AI + SAST) modes – achieving the most precise results.

CoinStats integrated Token Risks API to deliver reliable, real-time risk analysis of digital assets to their end users — surfacing token-level security data at the point of investment decision, not after the fact.

STANDARD READY
[BB Blueprint]

[Fig. 08]

Expert-triaged bug bounty for projects that demand signal over noise. Every submission reviewed by senior security engineers — no AI gatekeeping, no noise. Powered by Engram, our zero-knowledge proof of duplicates system, for transparency that no other platform provides.

$5.5M+ in rewards available. Seamless Slack and Jira integration. Exposure to the top security community from day one.

[42]

[Fig. 09]

faq-image

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