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Decide exactly what every application is allowed to do.

Let them run. Just don’t let them roam. Enforce strict boundaries on your trusted applications, so, if compromised, cybercriminals can’t turn your trusted applications into attack vectors.
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Stop living-off-the-land attacks.
Prevent Word, PowerShell, and other trusted tools from launching unauthorized processes or reaching the internet.
Contain supply-chain compromise.
If a trusted application is hijacked, prevent its from accessing sensitive systems or communicating externally.
Block fileless and tool-chaining attacks.
Limit how applications interact so attackers can’t pivot, escalate, or exfiltrate data.
When trusted applications are hijacked, they inherit the user’s full access to files, tools, the network, and the system itself. When compromised, they can steal data, encrypt files, launch PowerShell, and call out to malicious IPs.

That’s exactly how attacks like Follina spread: Word opens a document, launches MSDT, which triggers PowerShell. Suddenly, a trusted app becomes the attacker.

The solution? Put every application inside clear, enforced boundaries. Contain what it can touch. Contain what it can launch. Contain where it can connect. So, if it’s hijacked, it hits a wall. The application runs, but the attack doesn’t.
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With ThreatLocker proprietary Ringfencing application containment technology, you allow trusted apps to run. Yet, you let them interact with the specific files, registry keys, network resources, or other applications they actually need. Thus, you add a critical layer of control, ensuring apps can only do what they’re supposed to do, and nothing more.
Ringfencing has become a vital component of our defense strategy. It enables us to tightly control how applications interact with each other and with the operating system. For instance, many threats targeting reservation agents are delivered via PowerShell scripts. By using Ringfencing, we can restrict PowerShell's access to sensitive resources, effectively neutralizing this attack vector. This level of granular control significantly strengthens our overall endpoint protection framework.
Biju Dharmara
Corporate Director of Information Security and Compliance
Rotana

Here's how it works:

Deploy with strong, default protections
Need PowerShell to run, but not reach the internet? Done. Want Word to open documents, but never launch another app? Easy. These powerful out-of-the-box rules let you control hundreds of applications, so they behave exactly the way you want.
Customize with high granularity
Decide which files your applications can access, which programs they can interact with, and whether they can connect to the internet. Restrict scripts, block unauthorized process launches, and prevent apps from sending data outside approved channels.

Your benefits

Harden your environment by blocking fileless malware
Stop attacks that don’t rely on traditional files by restricting what applications can do.
Reduce attack surface by preventing app hopping and interactions
Block attackers from chaining apps together to escalate privileges or execute malicious actions. Set strict boundaries, so apps only talk to what you allow.
Take more control by limiting file access
Most of your 500+ applications don’t need to touch your sensitive files. With us, you ensure only the right apps see the right data.
With Ringfencing policies applied to SolarWinds Orion, ThreatLocker contained the application and any injected malicious code, preventing unauthorized actions, blocking access to sensitive systems, and stopping external communications, effectively halting the attack in its tracks.

Bonus: ThreatLocker 24/7 Cyber Hero® Team is always on hand to help you fine-tune policies fast, responding in just minutes.
Strengthen application containment with insights from ThreatLocker
Beyond showing how applications are adopted across environments. ThreatLocker reveals how they behave and interact. See exactly which files, registry entries, and network connections an application typically accesses and automatically generate recommended application containment policies to restrict risky behaviors and contain potential compromises before they spread.
Result:
Applications stay in their lane, even if compromised, preventing application hopping and minimizing attack vectors.
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The results?

Less risk and tighter control. No more application overreach. You take the control of your environment to a new level, enforcing strict boundaries attackers can’t bypass. Even if they sneak in, they hit a wall. The attack stops.
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