Guide

Your AI Agent Just Leaked Your Company Data. Here's How to Stop It

David Park||6 min
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One of my clients just found an AI agent uploading thousands of customer records to a public GitHub repository. It took them three days. The agent was running on a cloud VM with no authentication, no logs, and no access controls. This is not a hypothetical. IBM's 2025 Data Breach Report found that 13% of organizations experienced breaches of AI models or applications, and 97% of those organizations said they lacked proper AI access controls. That's insane. If you're deploying a computer use agent today without security hardening, you're not automating your work. You're rolling out a security hole. Let's fix that.

The Computer Use Security Nightmare

Computer use agents are different from traditional AI tools. Instead of just generating text, they control your desktop, browser, and terminal. They click, type, scroll, and execute commands. That power is exactly what makes them valuable. It's also what makes them dangerous. A single misconfigured agent can delete production databases, exfiltrate proprietary code, or compromise every system it touches. Security researchers are already talking about agentic AI as an insider threat. If you have 50 agents with different access profiles but no centralized security layer, you're running 50 potential insiders. That's a recipe for disaster.

Three Security Failures That Are Destroying Companies

  • Access control by model alone instead of by user and context. If your agent can run as any user, it can access anything.
  • No audit trail for agent actions. You can't fix what you can't see. IBM found security teams using AI slashed breach detection time by 80 days, but only when they had visibility.
  • Cloud VMs with default credentials left exposed. Most agents run in the cloud. If those VMs have passwords that anyone can guess, your data is gone.

The IBM report shows security teams using AI and automation extensively shortened breach times by 80 days and lowered average breach costs by 1.9 million dollars. But that only works when you actually have controls in place. Without them, you're just adding another attack surface.

Enterprise Security Best Practices for Computer Use

First, never let an agent run as an admin unless it absolutely must. Break the principle of least privilege into granular access levels. Your agent should only be able to reach the data it needs for its specific task. Second, implement a centralized logging and policy engine. Every action the agent takes should be logged, monitored, and compared against rules. If an agent tries to access production databases at 3 AM, your system should block it and alert you. Third, use Bring Your Own Key (BYOK) for any LLM integration. Don't let third-party platforms hold your secrets. Coasty lets you bring your own API keys so your AI models never see your data. You keep control. They keep running.

Why Coasty Is Different

Most computer use agents are black boxes that run in someone else's cloud and hand you back a text response. They don't give you visibility into what they're doing on your machines. Coasty is the opposite. It's a computer use agent that gives you full control. You can run it on your desktop, your cloud VMs, or as a swarm of agents working in parallel. Every action is logged. Every decision is auditable. You can implement your own security policies and enforce them with granular access controls. Coasty is the #1 computer use agent on OSWorld with an 82% score, higher than every competitor. But the real advantage isn't just performance. It's that you own the security. You can bring your own keys. You can deploy it in your own infrastructure. You can see exactly what it's doing at all times.

AI agents are here to stay. Companies that ignore security are going to pay for it. The IBM numbers don't lie. AI breaches cost more and take longer to detect. The solution isn't to stop using AI. It's to use it the right way. Start with strict access controls, a centralized policy engine, and BYOK for all your keys. Then choose the right agent. Coasty gives you a computer use agent that doesn't just work, it works securely. Check it out at coasty.ai and see how your other tools stack up.

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