Security Audit Services
Solidity Audits
Line-by-line manual review of EVM smart contracts with automated analysis
Rust & Solana Audits
Account validation, CPI safety, and program logic review for Rust-based chains
DeFi Security
Economic attack modeling, oracle analysis, and governance review for DeFi protocols
Formal Verification
Mathematical proof that critical contract properties hold under all inputs
Bridge Audits
Multi-chain validation, message verification, and asset custody review
L1 Chain Audits
Consensus, runtime, and economic security review for Layer 1 and appchain protocols
dApp Audits
End-to-end review of dApp contracts, integrations, and on-chain interaction logic
Pen Testing
Adversarial attack simulations against your full Web3 infrastructure
Incident Response
Emergency exploit analysis, fund tracing, and security hardening
Augmented by Sentinel
Our auditors are backed by Sentinel, an internal AI engine we built to extend coverage beyond what manual review alone can reach. It handles automated scanning and analysis at scale, so our team can focus on the vulnerabilities that require human judgement.
Turnaround
12–24h
Initial findings on most codebases. Sentinel runs scale coverage while our auditors focus on the bugs that need human judgement.
Recon
Codebase ingestion and scope analysis
Automated Sweep
Static analysis and fuzzing
Agentic Analysis
AI-driven threat review
Cross-Examination
Findings challenged and stress-tested
Triage
Findings deduplicated, ranked, and filtered for noise
Report
Severity ratings and remediation
Protected by TRIPWIRE
Audits are point-in-time. Exploits run on block time. Tripwire is our open-source circuit breaker for smart contracts: it checks the rules you write on every block, alerts you the moment one breaks, and can pause the contract on-chain. Run it yourself for free, or let us host and manage it for you.
Watches
Pending tx.
Rules can watch the mempool, so Tripwire can trip and pause the contract before the harmful transaction lands.
Rules in Plain Terms
“totalAssets never drops below totalSupply”, checked on every block
Alerts Everywhere
Telegram, Slack, Discord, email and webhooks, with full evidence
On-Chain Pause
Pause the contract or call an admin function, with only the power you grant
Yours or Ours
Self-host it free from GitHub, or let SigIntZero host and manage it
Audit-Informed Rules
We can turn SigIntZero audit findings into your first rules
Our Auditors
Alex Rybalko
Co-Founder & CEO
Co-Founder of SigIntZero. Security architecture and threat modeling for protocols and distributed systems.
Aron Turner
Co-Founder & CTO
CTO of SigIntZero. Engineering leadership, infrastructure architecture, and security tooling.
Dmitry Serdyuk
Co-Founder & CDO
Full-Stack Operator | Building across security, AI, and digital infrastructure.
Kolin Cunningham
Head of Business Development
BD at SigIntZero. Partnerships and go-to-market for Web3 security services.
Security Research
Fomo $48K Drain: A Fake Human Check That Ran a Bookmarklet on the Logged-In Wallet
A Fomo user lost about $48,000 without connecting a wallet, signing, or typing a seed phrase. A fake human check got them to run a bookmarklet on the logged-in Fomo page.
FlashLoopAdapter $305K: A Safe Module That Took the Caller's Word for It
A Safe module for looped Aave v3 positions asked its caller whether it was enabled, and believed the answer. A fake Safe said yes, and 114 ETH of equity left two real Safes in one transaction.
GoldPesa $115K: A Uniswap v4 Hook Paid Off the Attacker's Debt
GoldPesa's Uniswap v4 hook rebalanced inside an attacker's unlock. Its 148,868 USDC burn credit cancelled the attacker's unpaid debt, and 115,000 USDC walked out in one Base transaction.
Frequently Asked Questions
Get in Touch
Ready to secure your codebase? Send us a message and we'll get back to you within one business day.
Or reach us directly at:
contact@sigintzero.com