Frequently Asked Questions

HackNodes Lab is the first Spanish company specialized exclusively in cybersecurity for the Bitcoin ecosystem. Although the formal constitution of the company is recent, our team has been providing specialized Bitcoin training for developers for more than 3 years and working on security projects for decentralized infrastructures.

We are a team of cybersecurity specialists, software developers and Bitcoin protocol experts. Our team combines practical experience in secure software development, security audits, and specialized technical training. We work with a network of expert collaborators that allows us to offer comprehensive services while maintaining the specialization that characterizes us.

Bitcoin represents the most critical and valuable infrastructure in the crypto ecosystem, with over $50B in institutional custody. Its unique architecture, specific protocols like Lightning Network, and enterprise use cases require deep knowledge that cannot be obtained with generalist approaches. Our 3+ years training Bitcoin developers have shown us that extreme specialization is what really generates value.

Large consulting firms offer generic services superficially adapted to Bitcoin. We are native specialists of the ecosystem. We have 3+ years of real experience working exclusively on Bitcoin, response speed without learning curve, we develop innovative proprietary tools, and we are an active part of the Spanish and international Bitcoin community.

We work with all types of organizations that handle critical Bitcoin infrastructure: exchanges and trading platforms, startups building on Lightning Network, financial companies integrating Bitcoin, investment funds with Bitcoin exposure, and individual developers with ambitious projects. Our approach adapts to the size and specific needs of each client.

We perform specific audits for Bitcoin infrastructures that require deep knowledge of the ecosystem. We audit consensus and validation protocols of Bitcoin Core nodes, Nostr and Lightning Network implementations, HSM and seed vault systems, and integrations with Taproot and specific BIPs. Our approach goes beyond generic audits: we understand unique attack vectors that other generalist auditors don't identify. See the full details in Bitcoin security audit.

The difference is the focus: a traditional audit reviews servers, networks or email; a Bitcoin security audit also examines the points where funds are actually lost. Cold wallets, multisig setups, Lightning channels, key management and seed backups. For example: we verify whether your backups actually restore, whether your withdrawal processes enforce dual control, and whether your node exposes unnecessary services.

It depends on the scope: reviewing a multisig wallet is not the same as auditing the full infrastructure of an exchange. We offer fixed-price packages for the most common cases (node + wallets + processes) and custom quotes for everything else. The first consultation is free: we assess your case and tell you what you actually need — sometimes a targeted pentest is enough instead of a full audit.

Our detection and response platform is designed specifically for the Bitcoin ecosystem. We monitor Bitcoin and Lightning Network nodes in real time, detect specific threats like flooding attacks and channel jamming, identify transaction anomalies, and provide 24/7 automated alerts with emergency response.

Call us: we provide 24/7 incident response. If you detect unusual movements in your wallets or unauthorized access at 3 a.m. on a Friday, you have a direct channel (phone/Signal) and our team responds in under 30 minutes to contain the problem. An attack on Bitcoin or Lightning nodes can mean millions in losses within minutes — don't wait until Monday.

In many cases yes, but time works against you. Through on-chain forensic analysis we trace the funds, work with exchanges to freeze deposits, and produce expert reports valid for insurance claims and legal proceedings. If the loss was caused by your own mistake (an incomplete seed, a poorly configured multisig), the chances of recovery are even higher. The sooner you contact us after the incident, the better.

We have been training developers in Bitcoin technologies for more than 3 years, being pioneers in Spain. We offer technical workshops on secure development, Lightning Network certifications, corporate training for companies integrating Bitcoin, and cybersecurity workshops specific to the ecosystem. For example: secure wallet setup, detection of phishing targeting Bitcoin funds, and safe operation of Lightning channels. Learn more on our training page.

While others teach generic blockchain, we focus 100% on Bitcoin and its specific ecosystem. Our courses include practical programming in Rust for Bitcoin, real implementation of nodes and Lightning channels, real cases of attacks and defenses, and access to proprietary tools developed by our team.

Yes, we develop SDKs and security libraries specifically for the Bitcoin ecosystem. We work mainly in Rust developing cryptographic validation tools, libraries for secure integration with Lightning Network, Bitcoin-native authentication modules, and testing tools for Bitcoin applications.

Simple and efficient process: (1) Free initial consultation where we analyze your infrastructure and needs, (2) Personalized proposal designed specifically for your case, (3) Specialized execution applying our deep technical knowledge, (4) Continuous monitoring to keep security updated against new threats.

Multiple channels available for your convenience: Main email hola@hacknodes.com with response in less than 24h, 24/7 emergency consultation for critical incidents, and encrypted communications for maximum privacy. Is your Bitcoin infrastructure under attack? Contact us immediately.