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See exactly what an application will do before it touches your network

Run unknown or untrusted applications inside a secure, isolated environment. Observe their behavior, uncover hidden risks, and make informed approval decisions without exposing production systems.
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Reduce software supply chain risk
Analyze third-party and newly requested applications in isolation before they reach production endpoints.
Prevent malicious or unstable software from entering the environment
Detect hidden behaviors, registry changes, suspicious network activity, or embedded payloads before approval.
Improve application approval speed without increasing risk
Give your team a controlled environment to evaluate requests quickly while maintaining the security for your live systems.
Testing new applications in a secure, isolated environment lets you see exactly what the app does, before it touches your network. It’s your chance to catch hidden behaviors, shady installs, or unexpected changes without putting your systems, data, or users at risk. Instead of taking a chance with your production environment, you get the visibility and control you need to make informed decisions in a Threatlocker-controlled application testing environment.
Create a “Test before trust” policy for non-built-in applications.
Require any application that does not have a ThreatLocker built-in definition to run in the isolated testing environment before production approval. Observe behavior, validate dependencies, and document findings before allowlisting. This way, with built-ins you accelerate approvals while unknown applications get thoroughly tested. So nothing unverified enters production.
13,000+ built-in application definitions to accelerate your deployments

ThreatLocker built-in application definitions accelerate your deployments. Our predefined rules for trusted software reduce your manual policy creation and eliminate guesswork.
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  • Automatically recognize widely used, trusted applications
  • Pre-map dependencies, publishers, and common behaviors
  • Apply recommended allowlisting, containment, and elevation settings
  • Reduce approval time while maintaining deny-by-default enforcement


A streamlined approach to testing your applications:


When an application approval request comes in, launch the application testing environment and send the file to a secure, temporary virtual desktop, which is spun up in seconds. From there, you can:
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  • Watch how the file behaves in real time.
  • See what it changes, creates, or accesses.
  • Catch red flags like registry edits, system changes, or unexpected network activity.
  • Check results from threat intelligence databases.
  • Identify dependencies, automatically cataloged for you.


With a full view of the app’s behavior, you can confidently approve or block it, without putting your environment at risk.

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ThreatLocker Cyber Hero support team has been excellent. So much so that their response times have led us to request a note to be made to certain tickets when testing applications so that they didn't approve them before we got a chance to get in and view what was running in the VDI instance.

Doug Snelling
Systems Administrator
Indianapolis Colts

Your benefits
Early warning system
Catch malicious behavior before it reaches your network, with alerts triggered by suspicious activity around canaries (bait files).
Total transparency
See exactly what an application is doing in real time, so you can make faster, better decisions with higher confidence.
Proactive threat detection
Uncover hidden risks and abnormal behavior early, so you’re not blindsided by stealthy threats.
Validation at a glance
Instantly assess a file’s credibility with built-in virus scans from multiple engines, all in one clear view.
The results?
No blind approvals or risky installs in production. You don’t spend time guessing what an application might do. You see it first and decide with certainty. Your environment stays clean, and your team stays in control.