Security | Threat Detection | Cyberattacks | DevSecOps | Compliance

Episode 2 - Inside the Black Hat NOC: Defending a hostile conference network

Richard Bejtlich talks with Corelight Principal Technical Marketing Engineer Mark Overholser about what it takes to run the Black Hat Network Operations Center and keep a “hostile” training network safe. They walk through how partners like Corelight, Cisco, Palo Alto Networks, Arista, and Lumen build and monitor the conference network, how the team tells lab traffic from real infections, and why misconfigured self hosted services still show up in surprising ways.

Episode 1: Typhoon Season with Vincent Stoffer

Richard Bejtlich sits down with Vince Stoffer, Corelight's Field CTO, to dive into the recent wave of cyberattacks attributed to Chinese threat actors, known as "Typhoon" groups. Vince unpacks the distinctions between "Volt Typhoon," targeting critical infrastructure sectors such as energy and transportation, and "Salt Typhoon," which is infiltrating telecommunications networks for espionage. The conversation explores the evolving tactics, techniques, and procedures (TTPs) used by these groups, including their exploitation of zero-day vulnerabilities and outdated infrastructure.

Modernize threat detection and SOC efficiency with integrated Corelight Threat Intelligence

In the ever-escalating battle against cyber threats, security teams are often caught in a deluge of alerts, struggling to distinguish real threats from the noise. The sheer volume of threat data can be overwhelming, leading to alert fatigue and, worse, missed detections. But what if you could really cut through the clutter and focus on what truly matters?

Corelight's enhanced threat detection: staying ahead of evasive threats

In today's rapidly evolving cybersecurity landscape, organizations face unprecedented challenges. Cyber threats are not only increasing in volume but are also becoming more sophisticated and evasive, using AI themselves to enhance their attacks. The attack surface has expanded dramatically, while Security Operations Centers (SOCs) are often left with fewer resources to combat these growing threats.

No PoCs? No problem. How to hunt for F5 exploitation even when details are sparse

Endpoint detection and response (EDR) tools, and the analysts using them, have become incredibly effective. They have become so good, in fact, that we're now seeing a clear shift in adversary behavior: attackers are being pushed off the endpoint and onto places where EDR cannot run. This isn't just a theory. As I was writing a separate blog about a recent Cisco exploit which spurred an immediate CISA emergency directive, news dropped about another major network edge vendor, F5.

Are you blind to the next big firewall exploit? Warning signs and lessons learned from the recent Cisco exploit

It feels like the security world is caught in a recurring cycle. We see a spike in strange scanning activity, file it away as internet background noise, and then weeks later, a major zero-day exploit drops, targeting the very technology that was being scanned. The recent Cisco ASA vulnerabilities were a textbook example of this pattern. A September 4, 2025, report from GreyNoise highlighted a massive surge in scanning, with over 25,000 unique IPs probing Cisco ASA devices.

Exposing Salt Typhoon on the network using the PEAK Threat Hunting Framework

How do you find an adversary who lives where you can't easily look? A recent CISA advisory on the state-sponsored actor "Salt Typhoon" highlights this exact challenge. These actors aren't just breaking in; they're moving in. They persist on network edge devices like routers and firewalls—critical infrastructure that often sits outside the view of traditional endpoint security. From this vantage point, they capture traffic, steal credentials, and plan their next move.

7 Cybersecurity Mistakes That Put Your Online Identity at Risk

Your online identity has indeed become a major part of your real identity. People now interact more through social media as compared to face-to-face conversations. Therefore, every account you create, every login you use, and every profile you share shapes how you actually are in the digital space. However, the concerning part here is that hackers know this fact better than anyone. They exploit weak spots and turn your personal details into opportunities.