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Close your ransomware case with Open NDR

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Find hidden attackers with Open NDR

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Corelight announces cloud enrichment for AWS, GCP, and Azure

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Corelight's partner program

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10 Considerations for Implementing an XDR Strategy

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Don't trust. Verify with evidence

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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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Featured Post

January 28, 2025

Thrown in the deep end: My first time hunting in the Black Hat NOC

If you have even a passing interest in cybersecurity, you no doubt have heard of Black Hat, the eponymously named conference that launched in 1997 in Las Vegas. Nearly 30 years later Black Hat is a global phenomenon that bears little resemblance to its humble, hacker-led origins. And yet, the core idea of giving security teams insights into the... Read more »

Additional Posts

Corelight accelerates OMB logging adoption

In case you missed the Office of Management and Budget (OMB) (memo M-21-31), Improving the Federal Government’s Investigative and Remediation Capabilities Related to Cybersecurity Incidents, let me provide you the information that you need to know... Read more »

Detecting ​​CVE-2021-38647 OMIGOD

Researchers at wiz.io recently found a series of vulnerabilities in Windows Open Management Infrastructure (OMI) software, which is widely installed on cloud-based Azure Linux Agents. We have open-sourced a Zeek package for the most severe of these... Read more »

Using Zeek to track communication state

One of Zeek's greatest strengths is its ability to deeply inspect packet streams that are fed into it. It is adept not only at identifying network protocols but also parsing them to extract large amounts of useful information. There is another... Read more »

Monitoring networks for Chinese State-Sponsored Cyber Operations

The US federal government recently took an unprecedented step in the fight against cyber espionage, publishing detailed technical guidance on tactics and techniques used by Chinese state-sponsored actors. Read more »

Smart PCAP and threat detection in the cloud

I am thrilled to publicly launch Corelight software version 22, which introduces a transformative new security product, Smart PCAP, and also enables threat detection in the cloud by extending Corelight’s Open NDR support for Suricata across... Read more »

Telegram Zeek, you’re my main notice

Notices in Zeek Zeek’s Notice Framework enables network operators to specify how potentially interesting network findings can be reported. This decoupling of detection and reporting highlights Zeek’s flexibility: a notice-worthy event in network A... Read more »

What’s next for the National Cyber Director?

As the first National Cyber Director begins to settle into office, private industry is very hopeful that this will be one of the turning points to solidify a true private/public partnership for raising the cybersecurity posture of the U.S. As I... Read more »

PrintNightmare, SMB3 encryption, and your network

CVE-2021-1675, also tracked in CVE-2021-34527, is a remote code execution vulnerability that targets the Windows Print Spooler service. In a nutshell, there is a Distributed Computing Environment / Remote Procedure Call (DCE/RPC) that allows... Read more »

Corelight Sensors detect the ChaChi RAT

Recently Blackberry analyzed a new GoLang Remote Access Trojan (RAT) named “ChaChi.” This sample was interesting in that it tunnels information over DNS as its preferred command and control (C2) mechanism. We downloaded two PCAPs from the malware... Read more »

Corelight Sensors detect the ChaChi RAT

Recently Blackberry analyzed a new GoLang Remote Access Trojan (RAT) named “ChaChi.” This sample was interesting in that it tunnels information over DNS as its preferred command and control (C2) mechanism. We downloaded two PCAPs from the malware... Read more »