# The cost of an AI corporate network break-in fell 99% in five months

> Original title: A $90 Key into Your Company's Secrets

- Source: Tomasz Tunguz
- Published: 2026-11-06T00:00:00.000Z
- Bad Influence: https://badinfluence.news/items/dlog0rreo3l9alpbliu88zyf3
- Original: https://tomtunguz.com/a-90-dollar-key-into-your-companys-secrets/

## Summary

Tomasz Tunguz says the cost of an autonomous 32-step corporate network break-in fell from about $5k to $10k in April to $90 with Zhipu's open-weight GLM-5.3 by September. He argues that cheap AI attacks push CISOs to spend on enough defensive compute to make attacks uneconomic, citing a 700-agent swarm intrusion at Hugging Face in July 2026. The cost figures are calculations based on token pricing and cited evaluations.