Felicia MacArthur

Cosmos

Services

Resources

Customers

Partners

About Us

Get Started

Introducing Cosmos

Scoring high in the GigaOm Radar for the fourth year in a row!

Request A Demo

Cosmos Overview

Meet Cosmos: The continuous offensive security solution designed to provide proactive defense.

Cosmos Attack Surface Management

Get Cosmos Attack Surface Management (CASM) for unmatched visibility into your changing external attack surface with continuous discovery and mapping.

Cosmos Application Penetration Testing

Cosmos Application Penetration Testing (CAPT) strengthens the security of business-critical applications with in-depth assessments.

Cosmos External Penetration Testing

Cosmos External Penetration Testing (CEPT) builds on Cosmos Attack Surface Management to provide the highest level of attack surface protection with post-exploitation activities.

The Best Defense is a Great Offense

See Why We're the Leaders in Offensive Security

Explore Services

Application Security

Ensure your applications are secure and improve your DevSecOps practices.

Red Team & Readiness

Get a holistic view of your ability to defend against a real-world attack.

IoT & Product Security

Validate interconnected devices and products are secure against attackers.

Cloud Security

Assess cloud security posture with expert testing and analysis of your environment.

Network Security

Get insight into how skilled adversaries could establish network access and put sensitive systems and data at risk.

AI/ML Security Assessment

Fortify the security of rapidly evolving AI/ML applications, models, and supporting infrastructures.

Compliance & Regulations

Satisfy governance, risk, and compliance programs with our testing services.

Assessments for Our Partners

We're proud to work with Google, Facebook, and Amazon to increase security in their partner ecosystems.

A Ponemon Institute Report

The State of Offensive Security

Get the blueprint. Insights into how mature security organizations invest in offensive strategies.

Get the Report

Resource Center

Discover new offensive security resources, ranging from reports and eBooks to slide decks from speaking gigs.

Bulletins & Advisories

Explore the latest security bulletins and advisories released by our team.

Exploit for Fortinet CVE-2022-42475
Latest
View All

Blog

Dive into our blog for insights and perspectives from our offensive security experts.

Bishop Fox Labs

Learn more about our research and some of the most popular open-source security tools. Check them out here!

Why Partner with Us?

Join Forces with the Leaders in Offensive Security

Independent Assessment by TAG Cyber

Get the Report

Partner Program Overview

Learn about our partner programs and see how we can work together to provide best-in-class security offerings.

Find a Partner

Check out our awesome ecosystem of trusted partners to find the right solution for your needs.

Become a Partner

Explore partnership opportunities and apply to join forces with Bishop Fox.

Assessments for Our Partners

We're proud to work with Google, Facebook, and Amazon to increase the security of their partner ecosystems.

We're Hiring!

Want to Work with the Best Minds in Offensive Security?

Be part of an elite team and work on projects that have a real impact.

Explore Openings

Company Overview

Get to know us. Learn about our roots and see why we're on a mission to improve security for all.

Events

Join us at an upcoming event or peruse our speaking engagements, past and present.

Newsroom

Read the latest articles, announcements, and press releases from Bishop Fox.

Want to get in touch? We're ready to connect.

Career Opportunities

We're hiring! Explore our open positions and discover why the Fox Den is a great place to build your career.

Intern & Educational Programs

Starting your offensive security journey? Check out our internships and educational programs.

Bishop Fox Mexico

¡Celebramos! Bishop Fox is now in Mexico. Learn more about our expansion.

Meet the Author

Felicia MacArthur

Felicia MacArthur is a Security Analyst at Bishop Fox on the Cosmos (formerly CAST) team.

Subject Matter Expertise:

Reverse Engineering
Engineering protocol
AppSec
Network security
OS-level security

This site uses cookies to provide you with a great user experience. By continuing to use our website, you consent to the use of cookies. To find out more about the cookies we use, please see our Privacy Policy.