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Chocolate and peanut butter, Zeek and Suricata

Some things just go well together. A privilege of working with very sophisticated defenders in the open source community is seeing the design patterns they use to secure their organizations – both technology and workflows. One of the most common has... Read more »

Detecting GnuTLS CVE-2020-13777 using Zeek

CVE-2020-13777 is a high severity issue in GnuTLS. In a nutshell, GnuTLS versions between 3.6.4 (released 2018-09-24) and 3.6.14 (2020-06-03) have a serious bug in their session resumption code, which lets attackers either completely decrypt... Read more »

Profiling Whonix

Introduction This week I read a story announcing that the latest edition of Whonix had been released. I had heard of Whonix, but had never tried it. I knew it was a Linux distribution that tried to make it as easy and safe as possible to anonymize... Read more »

Network Security Monitoring, a requirement for Managed Service Providers?

Over the last six months, we’ve read in the security press about a variety of managed service providers (MSPs) being compromised by nation-state and criminal actors. Some examples: Read more »

Do you know your NSM data types?

When I first began writing about network security monitoring in 2002, I based my understanding on my experience in the Air Force Computer Emergency Response Team (AFCERT) and the tools and processes we used to detect criminal and nation-state... Read more »

Zeek is much more than a data format

Last week, a candidate for a senior role at Corelight explained his motivation for joining the company this way: “the world is standardizing on Zeek.” Read more »

First, Do No Harm

When we hear the phrase “first, do no harm,” most of us think of the Hippocratic Oath and its guidance for physicians. I was surprised to learn that the phrase as translated does not actually appear in the Greek, and that the origins are more... Read more »

Databricks + Corelight – A powerful combination for cybersecurity, incident response and threat hunting

Incident response, threat hunting and cybersecurity in general relies on great data. Just like the rest of the world where virtually everything these days is data-driven, from self-driving cars to personalized medicine, effective security strategies... Read more »

Joining a New Company Selling 20 year-old Software

I’ve enjoyed meeting many companies and leaders in the Bay Area over the past few months. The best surprise I had in doing so was with Corelight (where I recently joined as their chief product officer). Despite many years in security, when they... Read more »

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