Vitalik Buterin Backs AI Hacking Limits and KYC Risks

Ethereum co-founder Vitalik Buterin has supported Moonshot AI’s decision to limit advanced hacking capabilities in its Kimi K3.1 Pro model, warning that poorly handled AI security risks could lead to restrictive identity checks and widespread surveillance, according to CryptoNews.

In an October 26 post on X, Buterin defended Moonshot’s decision to exclude advanced offensive cybersecurity material from the model’s training. He argued that developers need more time to strengthen software against increasingly capable AI attacks through methods such as formal verification.

Performance and Restrictions

Moonshot introduced Kimi K3.1 Pro as an upgraded open-weight model on October 23, with plans to publish its full weights by November 4. The company removed selected cyberattack-related data from training and reinforcement learning while retaining general programming capabilities.

The filtering reduced performance on Moonshot’s internal exploit benchmark. An unfiltered version solved 90.5% of tasks, compared with 81% for the released model. On Terminal-Bench 4.0, the new model achieved 65.7%, compared with reported scores of 66.4% for Claude Opus 5.5 and 58.2% for GPT-6 Astra.

Surveillance Concerns

Beyond immediate cybersecurity concerns, Buterin warned that governments and technology companies could respond to serious AI-related incidents by imposing locked-down models, mandatory Know Your Customer checks, and intrusive surveillance where access depends on nationality or credentials.

Key facts

• Vitalik Buterin supported Moonshot AI limiting advanced hacking capabilities in the Kimi K3.1 Pro model.
• Moonshot's filtered model scored 81% on its internal exploit benchmark, compared to 90.5% for the unfiltered version.
• Moonshot plans to release the model's open weights by November 4.
• Buterin warned that unchecked AI attacks could lead to mandatory KYC checks and intrusive surveillance.