Monad Releases AI Tool to Prevent Smart Contract Hacks
The new open-source Ultrafuzz agent aims to automate vulnerability detection across Solidity and Vyper smart contracts.
Updated on Oct. 31, 2026 in Cybersecurity
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On September 10, 2026, the Monad Foundation released an open-source AI tool called Ultrafuzz alongside operational security guidance. This release follows a string of high-profile security incidents, including the July 2026 compromise of Injective developer packages and the Foundation's own October 26 Cloudflare API key breach.
Why it matters
The release highlights a critical pivot in cybersecurity as crypto teams struggle to secure infrastructure against attackers increasingly utilizing sophisticated AI. It addresses a systemic neglect of operational security, which has historically resulted in billions of dollars in losses.
ChainLight's Lumos tracker recorded $3.31 billion in exploited value from control hijacking compared to $983 million linked to smart-contract flaws. Monad validated the tool through more than 20 separate test runs on ecosystem projects.
The players
Monad Foundation
A blockchain infrastructure organization focused on high-performance execution environments and developer tooling.
Keone Hon
The co-founder of Monad who authored recent guidance on addressing administrative account and device management failures.
ChainLight
A security research firm that operates the Lumos tracker to quantify losses from various blockchain exploit vectors.
The details
Ultrafuzz functions by coordinating specialized AI agents that map user behavior and examine smart-contract logic. The agents identify specific conditions a protocol is intended to preserve, then systematically investigate whether execution sequences can violate those conditions. The tool supports the Solidity and Vyper programming languages, allowing for automated security audits of blockchain-based applications.
Timeline
January 2023: Lumos tracker began data collection on exploited value.
July 2026: A security incident compromised Injective developer packages.
September 10, 2026: The Monad Foundation officially announced the open-source Ultrafuzz tool.
October 26, 2026: The Monad Foundation experienced a Cloudflare API key compromise.
The Tech Race
The introduction of Ultrafuzz marks a tactical shift toward proactive automated defense in the ecosystem following the Injective developer package compromise. This development positions open-source AI agents as the primary defense against increasingly sophisticated and automated cyberattacks.
Developers and smart-contract auditors can immediately integrate Ultrafuzz into their existing workflows by accessing the repository on GitHub. The tool requires familiarity with Solidity or Vyper to effectively define the protocol conditions that the AI agents will monitor.
The takeaway
The Monad Foundation's shift toward automated agent-based security underscores that manual audits are no longer sufficient against modern, AI-assisted exploitation. Developers should monitor the project's repository for updates to supported languages and future benchmarks regarding automated vulnerability detection rates.
Further reading
For more on the current state of threat intelligence and defense, explore our Cybersecurity section.
Source note: This article includes information reported by Crypto.
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