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SANS Protects: The Network

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Threat hunting guide

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Alerts, meet evidence.

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5 Ways Corelight Data Helps Investigators Win

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Thinking like a Threat Actor: Hunting the Ghost in the Machine

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NDR for Dummies

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The Power of Open-Source Tools for Network Detection and Response

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The Evolving Role of NDR

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Detecting 5 Current APTs without heavy lifting

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Corelight Bright Ideas Blog

Open Source

Zeek on Windows

Editor's note: This post was originally published on the Zeek.org blog on Nov. 28, 2022. Reposted here in full with permission as a courtesy. Read more »

New position brings new open source opportunities

Today marks the start of ZeekWeek, the annual conference for information technologists who rely on the open-source Zeek® network for security monitoring. Read more »

Detecting CVE-2022-26937 with Zeek

This month, Microsoft announced a vulnerability in NFS. The exploit lies in how an attacker can force a victim NFS server to request an address from the attacker’s fake NFS server. The address returned will overflow memory on the victim NFS server... Read more »

What makes evidence uniquely valuable?

Editor's note: This is the third in a series of Corelight blog posts focusing on evidence-based security strategy. Catch up on all of the  posts here. American novelist F. Scott Fitzgerald famously wrote that “the test of a first-rate intelligence... Read more »

Know your environment: Tenable/Corelight integration for prioritized IDS alerts

One of the major causes of alert fatigue for SOCs is a class of alerts that fall in between false positives and useful detections: when an actual attack has been launched, and the detection is working correctly, but the host on the receiving end is... Read more »

World’s first 100G Zeek sensor

As we finished rolling out Corelight’s v21 software release, which saw the delivery of the world’s first 100G, 1U Zeek sensor, I was reminded of when I’d first read the “100G Intrusion Detection” paper written in 2015 at Berkeley Lab. The paper... Read more »

Who’s your fridge talking to at night?

I love origin stories – the tales of grand plans, unforeseen circumstances, and necessity that creates something new. These strange times have resulted in something new from Corelight, and I’d like to share how it came to be. Read more »

Zeek in its sweet spot: Detecting F5’s Big-IP CVE10 (CVE-2020-5902)

Having a CVE 10 unauthenticated Remote Code Execution vulnerability on a central load balancing device? That’s bad… Read more »

Ripple20 Zeek package open sourced

Recently, security research group JSOF released 19 vulnerabilities related to the “Treck” TCP/IP stack. This stack exists on many devices as part of the supply chain of many well known IoT/ICS/device vendors. Think 100s of millions/billions of... Read more »

Analyzing encrypted RDP connections

Microsoft’s Remote Desktop Protocol (RDP) is used to remotely administer systems within Windows environments. RDP is everywhere Windows is and is useful for conducting remote work. Just like every other remote administration tool, RDP can be used... Read more »

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