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See how continuous testing and attack surface management can help you defend forward.
Meet Cosmos (formerly CAST): the continuous offensive security platform designed to provide proactive defense.
Get unmatched visibility into your changing external attack surface with continuous discovery and mapping.
Eliminate noise and discover critical exposures, including steppingstones to more complex attack chains.
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
Ensure your applications are secure and improve your DevSecOps practices.
Get a holistic view of your ability to defend against a real-world attack.
Validate interconnected devices and products are secure against attackers.
Assess cloud security posture with expert testing and analysis of your environment.
Get insight into how skilled adversaries could establish network access and put sensitive systems and data at risk.
We're proud to work with Google, Facebook, and Amazon to increase security in their partner ecosystems.
By Andy Doering
Discover new offensive security resources, ranging from reports and eBooks to slide decks from speaking gigs.
Explore the latest security bulletins and advisories released by our team.
Dive into our blog for insights and perspectives from our offensive security experts.
We are the innovators behind some of the most popular open source security tools. Check them out here!
Learn more about our research — and our commitment to openly sharing information.
Why Partner with Us?
Independent Assessment by TAG Cyber
Learn about our partner programs and see how we can work together to provide best-in-class security offerings.
Check out our awesome ecosystem of trusted partners to find the right solution for your needs.
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We're proud to work with Google, Facebook, and Amazon to increase the security of their partner ecosystems.
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Meet the Author
Senior Security Analyst
Alex Leahu (CCENT, CCNA) is a Bishop Fox Alumnus who was a Senior Security Analyst. He focused on web application and network penetration testing.
Posts from Alex Leahu
Nov 30, 2018
PhpSpreadsheet Versions<=1.5.0 - XXE injection