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Jeff Costlow

Former Employee - CISO

Jeff Costlow

Jeff Costlow is the CISO at ExtraHop. He started his career in computer security in 1997. Jeff has deep experience with networking protocols, a passion for secure software development and many years of software engineering under his belt.

In his spare time, Jeff enjoys building and sailing small boats, making beer or cider, mentoring for FIRST robotics, and raising Pacific Northwest mason bees.

Connect with Jeff on Twitter or LinkedIn!

Posts by this author

How to Respond to OpenSSL Vulnerabilities

November 4, 2022

Learn about the risk of OpenSSL vulnerabilities, how to identify devices running OpenSSL, and how to spot exploit attempts after the initial intrusion.

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Exchange Server Security Challenges Explained

September 30, 2022

How to secure and monitor Microsoft Exchange Server and why decryption is a critical capability for security solutions. Learn more from ExtraHop.

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April Patch Tuesday Vulnerabilities: What You Need to Know

April 15, 2022

Learn about the risks and remediations for the latest Microsoft Patch Tuesday vulnerabilities.

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Detect and Stop Spring4Shell Exploitation

March 31, 2022

Get recommendations for how to detect Spring4Shell exploitation and learn how you can use ExtraHop to stop attacks that leverage this vulnerability.

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Detect Log4j Attacks Hiding in Encrypted Traffic

December 17, 2021

Learn how attackers are using encrypted protocols to hide Log4j attacks and why decryption has become a necessary capability for detection.

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Log4j Exploits Explained

December 10, 2021

Understand Log4j exploitation and how to remediate this zero-day vulnerability with ExtraHop Reveal(x).

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PrintNightmare Vulnerability: Detection, Explanation, and Mitigation

July 2, 2021

What you need to know about the latest PrintNightmare vulnerability (CVE-2021-34527), how it differs from other recent issues with the Print Spooler service, and what you can do to secure your organization.

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Detect Bad Neighbor Vulnerability on Windows 10 Systems

October 14, 2020

The Windows 10 vulnerabilities unveiled by Microsoft on October 13 include a remote DoS (CVE-2020-16899) and a remote code execution flaw (CVE-2020-16898) dubbed 'Bad Neighbor'. Get the rundown on potential exploits and what you should do.

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