Discover
Apps
Null Return

Null Return

Preview Only

B2BTool

Open app

This app is available for preview only and has not been validated by community. The owner can submit the application for validation.

About Null Return

Null Return delivers full-cycle Web3 security services like smart contract audits, pre-audits, fuzz testing, and formal verification to safeguard decentralized apps.

smart contracts

Null Return is a leading Web3 security auditing firm focused on protecting decentralized applications and smart contracts through advanced security services. By combining manual code reviews, fuzz testing, and formal verification, Null Return delivers end-to-end protection for blockchain-based projects across multiple ecosystems.

With expertise in securing smart contracts on Ethereum, Solana, Aptos, Sui, Ton, and zero-knowledge platforms, the company helps developers detect vulnerabilities, optimize logic, and ensure long-term contract reliability. Their certified team of security engineers and blockchain developers has experience in auditing DeFi protocols, stablecoins, gaming dApps, and privacy tools.

Founded to raise the standard of blockchain safety, Null Return provides tailored security solutions that address the full lifecycle of smart contract development. From pre-audit assessments to post-deployment reviews, Null Return helps projects mitigate risk, meet compliance goals, and build trust within the Web3 community.

Their services begin with pre-audits, where contracts are reviewed for basic issues and code readiness. These are followed by in-depth audits that include static analysis, manual logic review, and advanced testing like fuzzing and formal verification. The audit reports include detailed findings, actionable recommendations, and architectural improvements to enhance project robustness.

For ongoing projects, Continuous Audit Support ensures that the same audit team remains engaged through upgrades and changes, reducing onboarding time and preserving consistency. This approach is especially beneficial for DeFi protocols, which require frequent updates, multi-contract interactions, and complex integrations.

The firm’s multi-language expertise includes Solidity, Rust, Cairo, Move, FunC, and Circom, allowing them to audit across chains and zero-knowledge environments. Null Return supports EVM-compatible networks, zk-based systems, and emerging ecosystems like Sui and Aptos, positioning them at the frontier of blockchain security.

Unlike traditional audit firms that operate transactionally, Null Return acts as a long-term partner — helping clients prepare for mainnet launches, conduct upgrades safely, and protect against new threat vectors as their protocols scale. This approach has earned them trust from leading developers who require reliable, adaptable, and skilled audit partners.

Null Return offers specialized audit services and technical capabilities that distinguish it within the Web3 security space:

Full-Scope Smart Contract Audits: Combining manual review, static analysis, and test-based methods.
Pre-Audit Assessments: Code cleanup and optimization before the full audit phase.
Formal Verification: Mathematical modeling to verify correctness of smart contract logic.
Fuzz Testing: Automatic input generation to detect unexpected or edge-case behaviors.
Continuous Audit Support: Maintain long-term collaboration with the same audit team.
Cross-Language & Multi-Chain Support: Expertise in Solidity, Rust, Cairo, Move, Circom, and more.
Multi-Platform Compatibility: Audit projects across Ethereum, Solana, Aptos, Sui, Ton, and zk-rollups.
Confidential Reports: Secure processes and strict data protection for enterprise-grade confidentiality.

You can begin working with Null Return in just a few steps:

Go to the official website: https://www.nullreturn.io
Click on “Request Audit” and fill out the short form with your name, project details, GitHub link (if available), and Telegram handle.
Optionally, reach out directly via Telegram or email the team at [email protected].
You’ll receive a custom response including timeline, scope, cost, and recommended audit strategy.
Once confirmed, the audit process begins — including onboarding, vulnerability checks, optimization feedback, and final reporting.
After the audit, collaborate with the team for fixes, rechecking, and continuous support if needed.

Null Return FAQ

Continuous Audit Support allows projects to retain the same audit team throughout development. This eliminates repetitive onboarding, improves security consistency, and speeds up the review of new updates or protocol changes. For fast-evolving DeFi or staking platforms, this model ensures that the original team—already familiar with the architecture—can respond rapidly to new code deployments without starting from scratch. Learn more at Null Return.
Null Return specializes in platforms that use zk-SNARKs or zk-STARKs, applying unique audit methods to tools like Circom and Noir. Their audits focus not only on logic correctness but also on proof circuit validity and verifier safety. This ensures that projects using zero-knowledge technology are mathematically secure and not just functionally sound. More details available at Null Return.
Yes — Null Return prioritizes manual code review by security experts who look beyond syntactic issues. They identify logical errors, economic vulnerabilities, or protocol-specific attack vectors that automated scanners may overlook. This approach has helped prevent complex exploits in DeFi and NFT platforms where business logic is just as important as code syntax. Visit Null Return to see what their review process includes.
A pre-audit gives development teams the chance to clean up and optimize their code before a deep audit begins. It highlights quick wins, improves readability, and reduces the time and cost of a full audit. This preparation also ensures that the main audit team spends more time on critical issues instead of correcting superficial errors. Learn how it fits into the overall process at Null Return.
Null Return enforces enterprise-grade confidentiality practices, including custom NDAs, encrypted file handling, and secure repository access. Only approved audit personnel are assigned to the codebase, and client repositories are never reused or publicly discussed. This ensures protection of intellectual property and sensitive pre-launch features. Get in touch with their secure audit team via Null Return.