Engineering

Your AI Agent Could Leak Everything Right Now. Here's How to Stop It

Emily Watson||6 min
+Z

Last year IBM reported that 13 percent of organizations had breaches of AI models or applications and 97 percent of those companies lacked proper AI access controls. Now nation-state actors are using computer use agents to automate and scale cyberattacks. Your AI agent could be leaking everything right now and you probably wouldn't even notice. This isn't fearmongering. It's a fact.

AI agents are the new attack surface

Anthropic confirmed in November 2025 that a Chinese state-sponsored group used AI agents to orchestrate cyber espionage on an unprecedented scale. The attackers didn't just use AI as a recommendation engine. They used agentic AI to execute actions on real systems. That's computer use and that's how they broke in. OpenAI's Operator and Claude's computer use tools are powerful but they also introduce new privacy and security risks. Researchers found that adversaries can inject malicious content into GUIs that alters an agent's behavior in ways that look legitimate. This is called prompt injection and it's already being used in the wild to steal data. The scary part is that some attacks don't require any user interaction at all. A zero-click AI vulnerability was documented in 2025 that enabled data exfiltration through automated prompt manipulation. An attacker could trigger it remotely and the agent would silently send sensitive information out. If your security team isn't treating your computer use agents as actual software products they are already behind the curve.

The costs are staggering

IBM's 2025 Cost of a Data Breach Report found that 1 in 6 breaches now involve AI-driven attacks. The financial impact is massive and it's only going up. When a computer use agent misbehaves it can delete databases, send sensitive emails, or exfiltrate customer data. And because it's automated the damage can happen in minutes. The same report noted that AI adoption is outpacing AI security and governance. Companies are racing to deploy agents without locking down the risks first. That's a recipe for disaster.

71 percent of companies could fail a cyber audit according to recent research and many of those failures will be caused by unsecured AI agents that weren't even on the radar.

Turn off the data leak

The first rule of computer use agent security is isolation. Never let an agent run on a production machine with admin credentials. Use isolated environments like cloud VMs or sandboxed containers where it can do its work and then shut it down. This limits the blast radius if something goes wrong. You also need strict role-based access. A computer use agent should only have the permissions it absolutely needs. If it's supposed to fill out a form it shouldn't have access to delete rows or send emails. Monitor everything. All actions taken by a computer use agent should be logged and reviewed. Some companies are already seeing this pay off. They can catch suspicious behavior before it escalates. Prompt injection defenses are non-negotiable. Your agent needs to be trained to recognize and reject attempts to manipulate its instructions. Anthropic's computer use tool documentation emphasizes isolating the model from sensitive data and actions to avoid risks related to prompt injection. That's not optional advice. That's a requirement. Finally, treat agents like software. Apply the same security patches, vulnerability scanning and access controls you use for everything else. If you wouldn't deploy a web app with those flaws you shouldn't deploy an AI agent either.

Why Coasty exists

Building secure computer use agents from scratch is hard. Most teams are stuck with opaque APIs and black-box models that they can't audit. That's where Coasty.ai comes in. We've trained our own model specifically for computer use and we're seeing 85.6 percent success on OSWorld from our in-house model with public results. We also have 82.81 percent independently verified on the official OSWorld leaderboard at osworld-v1.xlang.ai. That's higher than every competitor and it means fewer errors that could lead to security incidents. Coasty gives you a desktop app and cloud VMs so you can control real machines not just simulate them. You can run agent swarms in parallel to speed up work without opening new attack surfaces. We support BYOK so your data never leaves your infrastructure. Security isn't an afterthought with Coasty. It's built into every layer of the system. If you're serious about computer use security you should be using a tool that was designed for it. Coasty is the obvious choice.

AI agents are here to stay and they're going to automate more of our work. But they're also going to create new risks if we don't take security seriously. Don't let your company be the next headline about an AI breach. Implement these best practices today. If you need a computer use agent that actually understands security and delivers results look at Coasty.ai. It's the only tool that combines top-tier performance with the security controls your team actually needs.

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