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FuzzingLabs

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About FuzzingLabs

FuzzingLabs is a cybersecurity firm specializing in vulnerability research, fuzzing, and blockchain security, offering audits, custom tools, and expert training.

blockchain security audits

FuzzingLabs is a cybersecurity company that specializes in advanced vulnerability research, blockchain security, and fuzzing technologies. Founded in 2021 and based in Paris, the organization delivers expert-driven services and cutting-edge tools that safeguard critical components across the digital ecosystem, from Web3 platforms to telecom infrastructure.

Through strategic partnerships with companies like FuzzingLabs, organizations enhance their defense posture with tailored security assessments, reverse engineering services, fuzzing-based testing frameworks, and dedicated training. Their client list includes industry leaders such as Google, Sui Foundation, Ethereum, Coinbase, and Web3 Foundation, emphasizing their credibility in a space where trust is paramount.

FuzzingLabs stands at the intersection of academic-grade security research and production-ready solutions, serving industries that demand robust and intelligent defensive measures. At its core, the company provides expert-level services in application security, blockchain analysis, cryptography auditing, and AI/ML security consulting. Their comprehensive suite of offerings ranges from code auditing to the development of custom security tools tailored to specific client environments.

A cornerstone of their ecosystem is the development of advanced fuzzers and vulnerability detection platforms. Key open-source contributions from FuzzingLabs include BEACON-FUZZ, an Ethereum 2.0 fuzzing framework, OCTOPUS for WebAssembly module analysis, and THOTH, a decompiler and analyzer for Cairo and StarkNet bytecode. These tools have helped uncover thousands of issues in protocols, compilers, cryptographic libraries, and smart contracts across the Web3 space.

Beyond blockchain, FuzzingLabs has extended its impact into telecom security with its proprietary fuzzer for 4G, VoLTE, and 5G network elements. This deterministic, multi-protocol fuzzer supports GTP, NGAP, PFCP, SIP, Diameter, and HTTP/2—providing exceptional value in testing, debugging, and vulnerability reproduction for telecom companies.

FuzzingLabs has also made significant strides in the area of Web3 OSINT and crypto investigations. Their forensic tools help track cryptocurrency fraud, de-anonymize blockchain activity, and support digital asset recovery across chains. This unique focus on both low-level fuzzing and high-level OSINT makes FuzzingLabs one of the most versatile and forward-thinking security firms in the blockchain space. Similar companies include Trail of Bits, ConsenSys Diligence, and Halborn.

FuzzingLabs offers a powerful range of features and benefits that address complex cybersecurity needs:

Cutting-edge Fuzzing Technology: Tools like BEACON-FUZZ and WARF enable discovery of vulnerabilities in Ethereum clients, WebAssembly runtimes, and blockchain virtual machines.
Web3 OSINT Platform: Perform blockchain investigations, fraud analysis, and de-anonymization using purpose-built OSINT tools tailored for the crypto ecosystem.
Telecom Protocol Testing: Their deterministic telecom fuzzer supports 5G/4G protocols like GTP, NGAP, PFCP, SIP, and Diameter, ideal for simulating denial-of-service attacks and regression analysis.
Expert-Led Training: Hands-on courses in reverse engineering, secure coding, and blockchain security help upskill teams with real-world tools and methods.
Trusted by Top Companies: Organizations such as Google, Coinbase, and Ethereum have worked with FuzzingLabs to improve their cybersecurity resilience.
Open Source Contributions: Projects like OCTOPUS, THOTH, and sui-fuzzer highlight their commitment to transparency and community-driven security.

FuzzingLabs provides a wide range of entry points for organizations and developers looking to enhance their security posture:

Explore Open-Source Tools: Access tools like THOTH, OCTOPUS, and BEACON-FUZZ through their GitHub repository.
Schedule a Consultation: Contact the team directly via the official website: fuzzinglabs.com to discuss custom assessments or research collaborations.
Register for Training: Sign up for on-site or remote learning in fields like Rust fuzzing, secure smart contract development, and advanced reversing techniques.
Use the Web3 OSINT Platform: Investigators and forensic analysts can request access to FuzzingLabs’ OSINT suite for blockchain data analysis and transaction tracing.
Follow for Updates: Stay informed through the official blog where new tools, research findings, and training dates are regularly posted.

FuzzingLabs FAQ

FuzzingLabs developed a deterministic telecom fuzzer that supports protocols like GTP, SIP, NGAP, PFCP, and Diameter. Unlike traditional fuzzers, it allows testers to reproduce crashes and trace bugs precisely—a critical feature when debugging 4G and 5G infrastructure. This reproducibility provides more efficient validation and helps secure standalone (SA) and non-standalone (NSA) 5G environments. Learn more at fuzzinglabs.com.
FuzzingLabs offers a Web3-specific OSINT platform built for forensic investigators, focusing on de-anonymization, ENS resolution, and on/off-chain linkage. Unlike typical block explorers or chain analytics dashboards, their tools incorporate open-source intelligence from social media, the dark web, and other public data points to build real-world threat profiles around wallet activity and protocols.
Through constant research and open-source innovation, FuzzingLabs actively maintains tools like BEACON-FUZZ for Ethereum and Solazy for Solana. These projects evolve with the ecosystems they monitor. Their R&D team also collaborates with foundations like Sui, Web3 Foundation, and Ethereum to ensure compatibility and coverage of critical components like RPCs, cryptographic libraries, and VMs.
Yes. FuzzingLabs' open-source frameworks such as THOTH and OCTOPUS are designed with modularity and extensibility in mind. Enterprises can deploy them into their CI/CD pipelines, use them as pre-audit filters, or extend them for proprietary use. Their deterministic behavior and language support (Rust, Cairo, Wasm) make them flexible assets for production environments. Download them from their GitHub.
FuzzingLabs offers dual-track learning with live in-person workshops for advanced teams and flexible e-learning options for individuals. Beginners benefit from structured fundamentals in topics like fuzzing strategies and program analysis, while experienced participants receive deep dives into browser internals, Rust/Golang reversing, and blockchain security. Certificates and hands-on exercises ensure lasting takeaways.