[Security With an Attacker's Mindset]
Protect What
Matters Most.
Vaultline (formerly 0xTeam) secures the smart contracts, applications, and AI systems that hold real value.
Quote within 24 hours.
Practices
What We
Secure
Blockchain & Smart Contract Security
We review every layer of a blockchain system, from contracts and protocols to bridges and the off-chain services behind them, backed by Slither, Echidna, and Mythril.
Learn moreApplication Security
Code, API, cloud, and infrastructure review that traces every bug to the design flaw producing it, plus pentest, red team, and incident response when you need attackers, not auditors.
Learn moreAI/ML Security
We research and review AI systems in production: agent loops, model integrations, and the new attack surface where autonomous agents touch real funds.
Learn moreResearch & Development
Our research desk turns engagement findings into public write-ups, breach analyses, and tools, including Leon AI, our vulnerability-detection engine.
Learn moreNot Sure What You Need?
Free 30-minute scoping call with an engineer. No pitch, no sales deck.
Talk to an Engineer,
Not a Sales Team.
Free 30-minute scoping call. Quote within 24 hours. NDA standard.