External Attack Surface Management

See your organization like an attacker.

Get a complete picture of your attack surface with Halo Security. Our easy-to-use, all-in-one solution to external cybersecurity testing and monitoring helps thousands of enterprises protect their customer data.

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Discover a complete picture of your attack surface.

Because you can’t protect what you don’t know about.

Modern business moves fast. Developers add new websites, services and software. Old assets are forgotten and new acquisitions are brought into the fold. Every website, server, certificate or third-party JavaScript creates another way in for attackers looking to steal customer data.

Our agentless and recursive discovery engine discovers the assets you’re not aware of, so you can prioritize your efforts from a single pane-of-glass.

Learn more about Attack Surface Discovery →

Deploy the right security resources with confidence.

The tools you need at your fingertips.

From firewall monitoring to penetration testing, you can easily apply the right resources to every asset from our centralized dashboard. And with quick access to the specifications of each asset, you can be confident that everything you control is being monitored appropriately.

See our approach to security testing →

Detect changes as they happen.

We’ll keep an eye on your perimeter so you can get on with your day.

When things change, as they often do, we’ll let you know so you can stop worrying about unexpected surprises. And when anything does come up, you can rest assured that our team of security experts are ready to help.

Solutions for your evolving security initiatives

Our black-box approach provides a second set of eyes on the effects of your security initiatives, so nothing falls through the cracks.

  • Evaluate subsidiaries, mergers and acquisitions

    Stop jumping through hoops to understand the security posture of your external entities.

  • Keep an eye your cloud migrations

    Reduce unintended exposures and assess security effectiveness as more and more of your assets move to the cloud.

  • Make your penetration testing efforts more effective

    Let automation continuously discover the obvious issues so your pentesting efforts can focus on what only humans can discover.

An extension of your security team at a fraction of the cost

We’re a team of seasoned perimeter security practitioners. We know hiring is hard, and that’s why our team isn’t here to just help you use our product, we’re here to validate results, discuss new vulnerabilities, and deep dive on any asset that’s exposed to the internet.

The team is extremely helpful with any questions we have with a quick response time. They take their time to make sure my questions have been fully answered."

- Kara Stroder, Alpine Shop

Visibility into more of your perimeter

Here’s what we help businesses uncover, monitor and secure.



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Your attack surface management program starts here.

If you’re ready to take control of your perimeter, our security experts are ready to help you get started.

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