San Francisco, CA, USA
Sep 29, 2023   |  By Chris Brown
Over the past few months, ransomware targeting healthcare organizations has been on the rise. While ransomware is nothing new, targeting healthcare organizations, at the extreme, can impact an organization’s ability to engage in anything from routine office visits to life-or-death diagnoses, treatments, and patient care.
Sep 21, 2023   |  By Richard Bejtlich
In my previous article, I proposed ways that modern network-derived evidence applies to the cyber kill chain—a concept created by Eric Hutchins, Michael Cloppert, and Rohan Amin that changed how security teams approach defending their digital assets. This article focuses on an evolved, non-linear version of the kill chain called the “kill web.”
Sep 15, 2023   |  By Ben Reardon
During Black Hat 2023 in Las Vegas, our Corelight team worked effectively and speedily with our first-rate Black Hat NOC partners Arista, Cisco, Lumen, NetWitness and Palo Alto Networks. I was fortunate enough to be a member of the NOC team at the show, helping to defend the Black Hat network. In this blog, I’ll share my experience within the Network Operations Center (NOC) as well as an incident that we detected, investigated, triaged, and closed using Corelight’s Open NDR Platform.
Sep 12, 2023   |  By Richard Bejtlich
When Eric M. Hutchins, Michael J. Cloppert, and Rohan M. Amin published their paper “Intelligence-Driven Computer Network Defense Informed by Analysis of Adversary Campaigns and Intrusion Kill Chains” in late 2010, they changed the way security personnel thought about defending their digital assets. The paper continues to be a useful model for defense today. This article proposes ways that modern network-derived evidence applies to the kill chain.
Sep 7, 2023   |  By Keith J. Jones
As a principal security researcher on Corelight’s Labs team, I help to solve difficult network security research problems at scale. Corelight’s customers might recognize some of my work if you see the packages “VPN Insights” or “App ID” on your sensors. Outside of my day-to-day role, I have a hobby podcast called eCrimeBytes where we lightheartedly discuss an electronic crime case each week.
Aug 3, 2023   |  By Dustin Lee
As promised, we wanted to dedicate a blog to detections and findings from the network operations center (NOC) at Black Hat Asia 2023 as a follow up to our Lessons Learned blog. Some of these discoveries may not surprise the seasoned analyst or senior threat hunter – but will hopefully provide a little entertainment, because the more things change, the more they stay the same.
Aug 1, 2023   |  By Chris Brown
While there have been many intrusions, compromises, breaches, and incidents that have made news in the IT and InfoSec industries throughout 2022 and into this year, when events or threats like Storm-0558 gain coverage by mainstream media, we often get questions about Corelight’s ability to detect threats through our sensors, products & platform.
Jul 27, 2023   |  By Tim Nolen
Trust is hard to earn but necessary for any successful relationship. As organizations build the systems to support Zero Trust, they find themselves balancing security and functionality across their operations. Incident Response and Network Operations in particular can be full of traumatic experiences, and as we sink into those moments the typical responses are freeze, flight, or fight.
Jul 13, 2023   |  By Roger Cheeks
In terms of unencrypted traffic, several highly used protocols lend themselves to logging and can significantly reduce the burden of packet capture without lowering the fidelity of information or the capabilities of analysts.
Jun 21, 2023   |  By Vince Stoffer
Increasingly, security teams are tasked with identifying, understanding, and managing risk around devices that may live outside the traditional IT umbrella. Operational Technology (OT) refers to computing systems that are used to manage and process operational functions as opposed to administrative operations, with Industrial Control Systems (ICS) being a major segment of that OT sector.
Aug 30, 2023   |  By Corelight
Defenders face numerous challenges in their complex, ever-expanding environments. Good data or network truth shouldn't be one of them. As Corelight is the standard in the NDR market, we will explore how to pivot from NDR to several EDR tools. The demo will showcase popular tools and give analyst workflow examples and use cases. Speaker: Steven Swaim (Principal Federal Sales Engineer, Corelight)
Jul 25, 2023   |  By Corelight
What is network detection and response, how is it fundamental to #cybersecurity, and why should #investors and #security leaders be investing in the #NDR space? Watch as Corelight CEO Brian Dye shares the answers to these questions and more in a new interview with NYSE.
Jun 2, 2023   |  By Corelight
Speakers: Matt Bromiley (SANS), Tim Nolen, Sr. Sales Engineer (Corelight), Jean Schaffer, Federal CTO (Corelight)
May 19, 2023   |  By Corelight
Want to know how to get a commanding view of all devices that log onto your network? Let’s ask ChatGPT! Watch as Corelight's James Pope leverages his AI assistant to explain the power of Zeek®—the open-source technology behind Corelight’s network evidence—and the detailed logs of network activity it produces, including protocols such as HTTP, DNS, and SSL. In the video he also shares how Zeek®’s open standard easily integrates with Suricata, SecurityOnion, Molok, Elk, CrowdStrike EDR logs, and more.
May 15, 2023   |  By Corelight
Speakers: John Gamble (Corelight), Domenica Crognale, Heather Mahalik, David Smalley.
Apr 24, 2023   |  By Corelight
As vendors develop new software or tools for threat hunting, we need to remember that threat hunting is predominantly a human-based activity in looking for incidents that our automated tools have not yet found, or cannot yet detect.
Apr 20, 2023   |  By Corelight
Whether you’re attending RSA or not, one thing is for certain - attackers are always at work. Furthermore, attackers are always working together without red tape like we have within our corporate infrastructure. That’s why Mandiant/Google, Stairwell, SnapAttack, Nozomi Networks, SentinelOne, and Corelight are hosting a webinar before RSAC 2023 to show how Defenders are also Stronger Together. There is no silver bullet in the cybersecurity space, so come get the conversation started early in an executive panel as we explore how each executive/organization is addressing.
Apr 17, 2023   |  By Corelight
Speakers: AJ Nurcombe (Corelight), Brandon Dunlop (ISC2) Threat hunting is a challenge to get right, with many potential pitfalls. There are twenty different definitions for threat hunting and ten different ways to do it. Organisations vary from having zero presence in their threat hunting program to multiple full-time hunters, but unfortunately, they often miss many critical pieces. This webinar will cover the common oversights that organisations fall foul of as well as emphasising the importance of network evidence in your threat hunting framework.
Mar 20, 2023   |  By Corelight
When organizations need to know not only what type of malicious activity potentially occurred within their networks and clouds but also gather the remnants of that activity as evidence — they turn to Corelight. Corelight's customers include Fortune 500 companies, major government agencies, and large research universities. Based in San Francisco, this open-core security company was founded by the creators of the widely-used network security technology, Zeek.
Feb 16, 2023   |  By Corelight
The current tempo in information security is getting increasingly faster. We continue to chase quicker detections and faster responses. But does that align with reality? Troves of data is being ingested at wire speed w/filtering, comparing, correlating, identifying, and other transform operations in the event lifecycle. This comes with an increased risk of missed events/alerts, indiscernible log activity from various origins, and the potential for analysis paralysis/desensitization/burnout…

Corelight gives you the high ground—a commanding view of your network that lets you outsmart and outlast adversaries.

From the Acropolis to the edge of space, defenders have sought the high ground in order to see farther and turn back attacks. Corelight delivers a commanding view of your network so you can outsmart and outlast adversaries. We capture, interpret, and connect the data that means everything to defenders.

Corelight gives apex defenders the information and tools they need to successfully detect and respond to threats. Corelight is built on Zeek, an open-source, global standard technology. Zeek provides rich, structured, security-relevant data to your entire SOC, making everyone from Tier 1 analysts to seasoned threat hunters far more effective.

The Open NDR Platform:

  • Suricata: Suricata generates alerts that we embed directly into Zeek logs, putting every detection into context to save time, cut alert backlogs, and improve analytics.
  • Zeek: The Zeek open source network security monitor generates lightweight metadata and detections to enable threat hunting and speed incident response.
  • Smart PCAP: Smart PCAP links logs, extracted files, and insights with just the packets you need, to reduce storage costs while expanding retention times by a factor of 10.

Faster investigations, more effective threat hunts with the world's best network evidence.