Network Security

Zeek & Sigma: Fully compatible for cross-SIEM detections

Corelight recently teamed up with SOC Prime, creators of advanced cyber analytics platforms, to add support for the entire Zeek data set into Sigma, the only generic signature language that enables cross-SIEM detections from a single toolset.... Read more »

Chocolate and peanut butter, Zeek and Suricata

Some things just go well together. A privilege of working with very sophisticated defenders in the open source community is seeing the design patterns they use to secure their organizations – both technology and workflows. One of the most common has... Read more »

Detecting GnuTLS CVE-2020-13777 using Zeek

CVE-2020-13777 is a high severity issue in GnuTLS. In a nutshell, GnuTLS versions between 3.6.4 (released 2018-09-24) and 3.6.14 (2020-06-03) have a serious bug in their session resumption code, which lets attackers either completely decrypt... Read more »

Detecting the new CallStranger UPnP vulnerability with Zeek

On June 8, Yunus Çadırcı, a cybersecurity senior manager at EY Turkey released a whitepaper and proof of concept code repository for a newly discovered vulnerability in the Universal Plug and Play (UPnP) protocol. UPnP is widely used in intranets to... Read more »

The high ground

Introducing Corelight’s new story + the value of NTA Read more »

Corelight ECS mapping: Unified Zeek data for more efficient analytics

In addition to other great news we’ve recently shared, I’m pleased to announce that Corelight sensors now support the Elastic Common Schema (ECS) via our Corelight ECS Mapping. Read more »

New Corelight app for Splunk: Making network-based threat hunting easier

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

Securing the Corelight Sensor

Have you ever considered how security tools can be a source of risk? They process untrusted data 24/7, have access to sensitive flows, and (like everything on the Internet) can be exploited if not patched regularly.   Read more »

What’s the riskiest part of your Bro deployment? It may be you.

Don’t overlook the obvious: the answer may be you Let me explain, because I’ve watched the following story unfold many times.  A curious person gets super excited about Bro, deploys it widely in their organization, and makes a big impact on the... Read more »

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