Solidified (Oak Security)

Solidified is a premium blockchain security brand operating under Oak Security GmbH, specializing in elite-level security audits and comprehensive security services for Web3 protocols and smart contracts. Founded by industry veterans with over a decade of cybersecurity experience, Solidified serves leading projects including the Ethereum Foundation, Arbitrum, and numerous Solana-based protocols.

Core Services

Solidified delivers comprehensive blockchain security through four primary service lines: Smart Contract Security Audits utilizing a unique blinded auditing process where multiple elite auditors compete independently; Penetration Testing to assess infrastructure and application resilience; Operational Security Training for technical and non-technical teams; and Virtual Chief Information Security Officer (vCISO) services providing ongoing strategic security leadership.

Key Strengths

The company distinguishes itself through its elite auditor network, bringing in top contest winners and recognized researchers from platforms like Code4rena, Sherlock, and CodeHawks. Their innovative "skin in the game" model ensures quality by returning a significant portion of fees if critical issues are missed, aligning auditor incentives with client security outcomes. Solidified's bespoke approach tailors every engagement to client needs, including security strategy workshops and threat modeling to strengthen overall security posture beyond code review.

Technical Expertise

The team possesses deep specialization across multiple blockchain ecosystems including EVM (Solidity), Solana (Rust), Cosmos (CosmWasm), Polkadot/Substrate (ink!), and Stellar (Soroban). Their expertise extends to auditing consensus algorithms, virtual machines, cross-chain bridges, cryptographic primitives, DeFi protocols, liquid staking/restaking mechanisms, and off-chain infrastructure. With a distributed team of 50+ security researchers holding advanced degrees in Computer Science, Cryptography, Economics, and Engineering, the firm has completed over 600 security engagements.

Notable Projects

Solidified has audited critical infrastructure for major blockchain projects including smart contracts for Ethereum Foundation, Arbitrum's layer-2 protocols, various Solana DeFi applications, and Babylon Genesis deployments. Their work spans from foundational blockchain infrastructure to complex DeFi protocols, demonstrating versatility across protocol types and blockchain platforms.

Why Choose Solidified

Solidified operates on the principle that proper security extends far beyond the audit report. Their manifesto emphasizes zero-trust architecture, acknowledging that any protocol layer may be compromised. By combining elite technical talent, financial accountability through their fee-return model, embedded security culture building, and lifecycle security coverage from design through operations, Solidified aims to raise the bar for the entire Web3 industry. The firm's founder-led structure without VC funding enables sustainable growth focused on quality over quantity, maintaining rigorous standards across every engagement.