Blockchain Security
Overview
Security in blockchain is not optional — it is structural. At Itrion, we approach security from an advanced, comprehensive, and continuous perspective. We protect smart contracts, protocols, digital assets, and distributed architectures against both internal and external attack vectors.
Clean code is no longer enough — what’s at stake is trust, traceability, and the real value of your on-chain operations.
What do we secure?
Smart Contracts
Exhaustive analysis of logic, permissions, public functions, and dependencies.
DeFi Projects and DApps
Protection against exploits, flash loans, oracle manipulation, and front-running attacks.
Blockchain Architectures
Review of nodes, private keys, distributed environments, RPCs, and validation channels.
Technical Infrastructure and Processes
Secure DevOps practices, endpoint auditing, testing environments, and version control.
External Integrations and Oracles
Validation of data channels, cryptographic signing, and resistance to manipulation.
Our Services
Tailored security for critical architectures
Protection, traceability, and compliance,
from technical foundations to operational deployment.
At Itrion, we understand that every blockchain infrastructure requires a security approach tailored to its architecture, business logic, and risk exposure. That’s why our solutions go beyond vulnerability detection — they are designed to safeguard assets, processes, and smart contracts with a comprehensive vision and technical precision.
From threat analysis to the implementation of active defence mechanisms, we provide advanced security services tailored to each client’s technological, regulatory, and operational environment.
Our commitment is to ensure that innovation never compromises integrity — and that your distributed infrastructure operates with the resilience demanded by an environment where there is no room for error.
We conduct a thorough analysis of the source code of smart contracts written in languages such as Solidity, Vyper, or others compatible with EVM and non-EVM environments. We examine business logic, permission management, interactions with oracles and other external dependencies, as well as potential unhandled execution conditions.
Our audit includes detection of known vulnerabilities (reentrancy, overflow, frontrunning, etc.), identification of poor practices, and review of external library usage. We provide a comprehensive technical report detailing findings, classified by severity level, potential impact, and specific corrective recommendations.
Additionally, we validate the contract under edge cases and adverse scenarios to ensure stable behaviour in real-world high-demand situations.
We simulate targeted attacks on smart contracts, decentralized applications (DApps), oracles, and integration channels using the same techniques employed by highly skilled attackers.
We analyse the system from an offensive perspective: injection of manipulated data, overload of critical functions, bypassing validations, manipulation of timings or prices via oracles, and more.
Our testing includes both manual and automated analysis, designed to uncover vulnerabilities not detected in static reviews, particularly those dependent on conditional logic or interactions between multiple contracts or components.
The result is a detailed risk map, complete with specific mitigation and reinforcement plans.
We design and implement continuous monitoring systems to detect anomalous behaviour in smart contracts, wallets, networks, and infrastructure nodes.
We configure alerts for sensitive events such as unauthorized calls, unexpected transfers, critical state updates, or deviations in contract activity.
We can integrate these alerts with custom dashboards, notification services (email, Slack, Telegram), or even execute automated actions in response to incidents.
This service is ideal for production protocols managing high-value assets or data that require immediate response capabilities to incidents or exploitation attempts.
We strengthen security at every stage of the software lifecycle: from code writing to production deployment.
We audit and configure CI/CD systems, review key and credential management, and ensure proper setup of repositories, access permissions, and testing, staging, and production environments.
We implement secure versioning policies, dual validation in deployments, isolated environments, and audit controls over every critical action.
This service is crucial to prevent a breach in the technical environment from compromising already audited contracts or irreversible blockchain deployments.
We provide consultancy to align security practices with regulatory frameworks and international standards applicable to blockchain projects.
We adapt architecture and technical procedures to standards such as ISO/IEC 27001, OWASP Blockchain Top 10, NIST CSF, and current regulatory requirements regarding data protection, fraud prevention, information integrity, and operational security.
We offer guidance for companies seeking to prepare for external audits, operate in regulated sectors, or establish internal security and compliance policies — all without compromising agility or technological competitiveness.
We analyse libraries, frameworks, and external contracts used in the project to identify potential inherited vulnerabilities, backdoors, obsolete code, or maliciously inserted elements.
We evaluate direct and indirect dependencies, their maintenance history, update frequency, and exposure to known vulnerabilities (CVEs). We also review imported contracts, inherited proxies, and commonly used libraries such as OpenZeppelin to ensure their integration does not expose the system to unnecessary risks.
This analysis provides the client with a comprehensive view of the extended attack surface, which is often underestimated and ultimately becomes the most critical entry vector.
We advise startups, corporations, and public entities on the design and implementation of security strategies tailored to the Web3 ecosystem, from system conceptualisation to post-deployment governance.
This includes key decisions such as the use of upgradable or immutable contracts, validation and rollback mechanisms, multi-layer system design, key custody, separation of duties, and the definition of security policies for DAOs, tokens, and decentralised systems.
This service is especially aimed at projects that need to combine technological innovation with robust governance and operational resilience, without compromising decentralisation.
Because immutable does not mean invulnerable
Blockchain guarantees immutability, but not immunity. A single error in a contract can lead to irreversible asset loss, protocol collapse, or massive platform failure. At Itrion, we don’t leave that risk to chance: we prevent it with technical precision and methodological discipline.
Our Methodology
Security in blockchain is not improvised: it is designed, executed, and validated methodically. At Itrion, we apply a rigorous approach that combines proprietary methodologies, international standards, and specialised tools. Our process not only aims to detect vulnerabilities but also to understand their impact, anticipate attack vectors, and build sustainable defences over time.
1
Structural and contextual analysis
We begin each project with a detailed understanding of the system architecture, identifying critical points, interdependencies, and levels of exposure.
We analyse the contract type, the blockchain network used, critical functions, and the type of asset involved. We also assess the applicable regulatory environment and a realistic threat model based on the most likely attack types (financial, reputational, operational).
This analysis allows us to define security priorities and establish an evaluation framework aligned with the specific risks of the project.
2
Application of recognised standards
We don’t rely solely on experience: we work within established regulatory frameworks. We integrate practices from the OWASP Blockchain Top 10, the ISO/IEC 27001 standard, the NIST Cybersecurity Framework, as well as technical recommendations from specialised organisations in Web3 and distributed system security.
This enables us to ensure that every security assessment goes beyond the source code and also considers structural aspects such as key management, deployment traceability, update policies, and fallback or containment mechanisms.
3
Functional decomposition and flow analysis
We decompose the contract logic into all its possible execution paths. We thoroughly review public and private functions, control structures, validation conditions, storage, and permissions.
This process is carried out both manually and automatically, using tools such as Slither, Echidna, and MythX, but always under the supervision of our technical team.
Additionally, we evaluate how the contract interacts with oracles, external interfaces, other contracts, tokens, and other data input sources, detecting logical errors, inconsistencies, and potential points of indirect exploitation.
4
Iterative and documented methodological approach
Our approach is neither static nor one-sided. Each review is conducted in iterative cycles that allow us to validate improvements, correct errors, and retest until an optimal level of security is achieved.
We thoroughly document each finding, classify it by risk level, and propose clear, actionable mitigation plans.
The process concludes with a comprehensive technical report, accompanied—if required by the project—by external validations, digital traceability, and evidence for auditors, investors, or regulatory bodies.
This comprehensive approach not only enables us to detect vulnerabilities with high precision but also to understand their real impact, propose effective solutions, and minimise the attack surface. Each phase of the process is designed to provide the client not just with a diagnosis, but a clear roadmap towards a truly secure blockchain environment, aligned with the highest standards and ready to operate confidently in production. At Itrion, security is not a one-off review — it is a continuous and measurable practice.
Our Tools
We use a set of leading tools in the blockchain security ecosystem, combined with manual analysis and validation in real-world environments.
Static and formal analysis
Slither, MythX, Secuify, Crytic
Dynamic analysis and fuzz testing
Echidna, Manticore, Foundry, Tenerly
Attack simulation and real-world scenarios
Testing with testnets and controlled forks that replicate system behaviour under adverse conditions
Secure execution environments
Private networks, independent node configurations, oracle simulators, and granular event control
Strategic Partnerships
When a project requires a certified external review — for regulatory compliance, institutional validation, or third-party requirements — we collaborate with specialised partners in blockchain auditing and cybersecurity.
We coordinate cross-audits and deliver joint reports with full process traceability, digitally signed results, and technical evidence that strengthen the project’s credibility with investors, clients, and regulators.
At Itrion, we provide direct, professional communication aligned with the objectives of each organisation. We diligently address all requests for information, evaluation, or collaboration that we receive, analysing each case with the seriousness it deserves.
If you wish to present us with a project, evaluate a potential solution, or simply gain a qualified insight into a technological or business challenge, we will be delighted to assist you. Your enquiry will be handled with the utmost care by our team.
At Itrion, we provide direct, professional communication aligned with the objectives of each organisation. We diligently address all requests for information, evaluation, or collaboration that we receive, analysing each case with the seriousness it deserves.
If you wish to present us with a project, evaluate a potential solution, or simply gain a qualified insight into a technological or business challenge, we will be delighted to assist you. Your enquiry will be handled with the utmost care by our team.