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Corelight recognized as a leader in the 2025 Gartner Magic Quadrant™ for network detection and response

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Tracking down a glibc regression

We’d just upgraded our glibc package from 2.32 to 2.33, when we noticed some peculiar behavior. Here's how we tracked down a glibc regression.

Justin Azoff May 13, 2021
Zeek

Who’s your fridge talking to at night?

Corelight is excited to announce the Corelight@Home program, bringing Corelight’s enterprise-class Network Detection and Response to home networks.

Gary Fisk Nov 19, 2020
Zeek

Small, fast and easy. Pick any three.

Zeek has been the darling of security defenders looking to get deep visibility into network traffic. Today, we are excited to announce the Software...

Seth Hall Nov 18, 2020
Zeek

Mixed VLAN tags and BPF syntax

This post contains a warning and a solution for anyone using BPF syntax when filtering traffic for network security monitoring.

Richard Bejtlich Aug 27, 2020
Zeek

Don’t delay – Corelight today!

While I have used log collection and SIEM platforms to review Zeek transaction logs, it is not necessary to wait for a SIEM before collecting...

Richard Bejtlich Aug 1, 2019
Zeek

Profiling Whonix

I downloaded Whonix version 15, in which two virtual machines work together to detect activity in a clever way.

Richard Bejtlich Jul 18, 2019