Network Security Monitoring

On Tuesday, Jan. 14, 2020, the world learned of the vulnerability du jour, CVE-2020-0601. As explained by Microsoft, “a spoofing vulnerability exists in the way Windows CryptoAPI (Crypt32.dll) validates Elliptic Curve Cryptography (ECC)... Read more »

This week’s launch of version 18 of our software features the Encrypted Traffic Collection, our first collection of a series of detections and data enrichments created by the Corelight research team. This collection focuses on SSH, SSL/TLS... Read more »

Want to use Zeek (formerly Bro) network data in Splunk ES, but don’t know how to start or where to look? Read more »

With almost two decades of networking experience, I recently made my first foray into a security-centric user conference at Zeek Week, an annual conference for the user community of the open source network security monitoring platform known as Zeek... Read more »

Recently a fan of network security monitoring (NSM) asked me for advice on his current instrumentation situation. He said his organization was new to NSM and was interested in pursuing solutions with Corelight. However, the company did not have any... Read more »

Network and security infrastructure, such as routers, switches, firewalls, virtual private network concentrators, and other equipment, are designed to provide a stable and secure communications experience for client and server computers and their... Read more »

When we think about using Corelight data, our mental models often fixate on finding evidence of suspicious and malicious activity. This makes sense, as network security monitoring data generated by Corelight and Zeek combines the granularity of... Read more »

Introduction Recently I heard that a company interested in Corelight was considering delaying their evaluation because of questions about SIEM technology. They currently have two SIEMs and are evaluating a third, possibly to replace the first two.... Read more »

In the course of my network security monitoring work at Corelight, I’ve encountered the terms detection, inference, and identification. In this post I will examine what these terms mean, and how they can help you describe the work you do when... Read more »

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 »