Corelight Bright Ideas Blog

Can you be sure attackers aren’t hiding in your encrypted traffic? Can your investigators go back 18 months ago to find what they need? Do your DNS queries all have responses, and are they what you expected? Do your alerts mean something, or nothing? Read more »

We’d just upgraded our glibc package from 2.32 to 2.33, when we noticed some peculiar behavior. Glibc 2.32 had a number of minor security issues and needed to be patched or upgraded. Instead of back-porting the patches to 2.32 we decided to upgrade... Read more »

Recently, Trustwave reported on a new malware family which they discovered during a breach investigation. The backdoor, dubbed Pingback, executes on Windows systems and communicates with its controller via ICMP messages. ICMP (Internet Control... Read more »

Through our newly announced partnership with CrowdStrike, Corelight customers will be able to incorporate CrowdStrike’s best-in-class threat intelligence into Corelight Sensors to generate actionable alerts and network evidence. In addition, by... Read more »

Recently a very interesting Linux-based command-and-control (C2) malware was described by the research team at Intezer. As usual there is a set of simple network-based IOCs in the form of domains and IPs that organizations can search against their... Read more »

Comprehensive visibility is challenging in a cloud environment. While these environments are rich sources of telemetry and logs, it is challenging for security teams to ensure that logging is configured (and stays configured) on every service, to... Read more »

The new Microsoft Exchange vulnerabilities disclosed earlier this month highlight the importance of architecting for security visibility on the network. Read more »

One of the most important aspects of threat hunting is having a place to start. A question, a theory, or a hunch often begins the hunt. Where you end up may not be where you first intended, but a good hunt will always reveal new information about... Read more »

Network Intrusion Detection Systems (NIDS) are widely deployed by the most sophisticated blue teams in the world. For well-funded organizations, there is little question about the value of NIDS, but adoption is not uniform across the entire... Read more »