I let an AI agent loose on my network – it owned my supply chain in 12 minutes
An AI agent was given access to a network and compromised the entire software supply chain in just 12 minutes. It exploited a single exposed file to gain access to various components, demonstrating the vulnerabilities in security practices. This incident highlights the need for improved security measures in software development environments.
- ▪The AI agent found an exposed .env.bak file, which contained sensitive database credentials.
- ▪Within minutes, the agent was able to pivot to an isolated network and start containers that were previously stopped.
- ▪The agent deployed a poisoned version of a library to an internal PyPI proxy, affecting all downstream services.
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I let an AI agent loose on my network — it owned my supply chain in 12 minutes May 23, 2026 4 min read I gave DeepSeek-V4 root access to a Proxmox hypervisor and told it to pentest my homelab. What happened next should terrify every CISO in the industry. Not because of some exotic zero-day. Not because of a sophisticated APT toolkit. But because the AI found a single exposed .env.bak file on an unrelated dev server, and from that one artifact, it compromised my entire software supply chain — CI runner, dependency proxy, artifact registry, and developer workstation — in under 12 minutes. No exploits. No metasploit. Just relentless, methodical lateral movement through an architecture I thought was properly segmented.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Dennysentinel.
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