Tech | Bishop Fox

Introducing Cosmos

Winner of SC Media's Best Emerging Technology Award

See how continuous testing and attack surface management can help you defend forward.

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Platform Overview

Meet Cosmos (formerly CAST): the continuous offensive security platform designed to provide proactive defense.

Attack Surface Management

Get unmatched visibility into your changing external attack surface with continuous discovery and mapping.

Exposure Identification

Eliminate noise and discover critical exposures, including steppingstones to more complex attack chains.

Continuous Attack Emulation

Emulate real-world attacks to understand exposures and post-exploitation pathways, then operationalize findings to close attack windows.

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.

Assessments for Our Partners

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

Featured Resource

Breaking & Entering: A Pocket Guide for Friendly Remote Admins

By Andy Doering

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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.

Log4j Vulnerability
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Blog

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

Research & Tools

We are the innovators behind some of the most popular open source security tools. Check them out here!

Bishop Fox Labs

Learn more about our research — and our commitment to openly sharing information.

Why Partner with Us?

Join Forces with the Leaders in Offensive Security

Independent Assessment by TAG Cyber

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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.

Featured Tech

Creating an Exploit: SolarWinds Vulnerability CVE-2021-35211

Sometimes, our Cosmos team creates custom exploits for particular CVEs as requested by clients. In this case, Carl Livitt created an exploit for CVE-2021-3521; here, he shares his thought process behind creating a ROP-based exploit for Serv-U FTP v15.2.3.717 on modern Windows systems.

Bishop Fox and Imperva collaboration on critical exposure

Tech

Jan 11, 2022

Zero-Day Collaboration: Working With Imperva to Eliminate a Critical Exposure

By Carl Livitt

Bishop Fox Log4j Log4shell exploits blog post F

Tech

Dec 27, 2021

How Bishop Fox Has Been Identifying and Exploiting Log4shell

By Dan Petro

Find Out First

Be first to learn about latest tools, advisories, and findings.

Tech

Dec 06, 2021

XMPP: An Under-appreciated Attack Surface

By Zach Julian

Tech

Nov 15, 2021

Eyeballer 2.0 Web Interface and Other New Features

By Dan Petro

Tech

Oct 21, 2021

A Snapshot of CAST in Action: Automating API Token Testing

By Zach Zeitlin

Tech

Sep 28, 2021

An Intro to Fuzzing (AKA Fuzz Testing)

By Matt Keeley

Tech

Sep 23, 2021

IAM Vulnerable - Assessing the AWS Assessment Tools

By Seth Art

Tech

Sep 09, 2021

IAM Vulnerable - An AWS IAM Privilege Escalation Playground

By Seth Art

030821 FI Blog Post Youre Doing IOTRNG NEW

Tech

Aug 05, 2021

You're Doing IoT RNG

By Dan Petro Allan Cecil

210618 Featured Image LEXSS BYPASSING LEXICAL PARSING SECURITY CONTROLS dynamic listing view

Tech

Jun 22, 2021

LEXSS: Bypassing Lexical Parsing Security Controls

By Chris Davis

Tech

Feb 25, 2021

An Exploration of JSON Interoperability Vulnerabilities

By Jake Miller

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