GREYCORTEX

Most networks contain things no one remembers approving. An old service left exposed. A device connecting to an unexpected destination. A plaintext password crossing the network. Encryption that should have been retired years ago. A network security audit turns these overlooked details into evidence you can act on. GREYCORTEX Mendel helps you audit activity across IT and OT environments, including devices that endpoint tools may not cover. It can reveal: 🔹 Outdated systems, protocols, and encryption 🔹 Unnecessary or exposed services 🔹 Forbidden or unexpected connections 🔹 Plaintext passwords and anomalous data transfers 🔹 Gaps in segmentation and security policy enforcement The result is a clearer view of what needs to be fixed, removed, or investigated. Learn more: https://lnkd.in/dYkVTpqD

Firewalls and endpoint tools are foundational. But they leave a gap where most incidents actually develop. #NetworkSecurity #NDR #Mendel

Not every alert comes with an easy answer. A sneak peek at Mendel 5.0: an AI Assistant built directly into Mendel that turns complex network data into answers you can actually act on. What you can expect: 🔹 Explains security events in plain language and gives recommendations 🔹 Identifies devices and their likely role on your network 🔹 Assesses external IPs and suggests whether to block, monitor, or allow 🔹 Combines alert and host data into a clear verdict and next steps #NDR #Mendel #Cybersecurity

Every new subnet creates another task for you: track it, document it, and add it to your monitoring. Annoying, right? Mendel monitors DHCP traffic and automatically adds newly detected subnets to the inventory. That means less manual work, fewer missed segments, and an inventory that reflects what is actually on your network. Mendel passively reads the DHCP traffic already visible on the monitoring port, including: ✅ Subnet and mask ✅ Gateway ✅ DNS server ✅ NTP server ✅ Lease time As soon as a new segment appears, Mendel reads these details and updates the inventory automatically. Your network inventory stays current as the network changes. #NetworkSecurity #NDR #Mendel

One host looks compromised. Now you need to know every device it has talked to. Normally, that means jumping between different tools, piecing the picture together. A sneak peek at Mendel 5.0: click a host, and the Traffic Flow Map shows everything it talks to on a single map. Suspicious connections going out. Internal server traffic. All in one place, no more jumping between screens. More previews are coming soon. #NDR #Mendel #Cybersecurity

Attackers rarely send stolen data in plain sight. They try to make it blend in. For analysts, this is difficult to investigate because the traffic often does not look clearly malicious. It may be a file name that looks slightly unusual. A connection on a port that could be odd, but legitimate. Encrypted traffic with limited visible context. That is the purpose of data obfuscation: avoid attention and delay investigation. GREYCORTEX Mendel helps analysts look for signals such as: 🔎 Encoded data in file names, URLs, and payloads 🔎 Traffic on non-standard ports 🔎 Tunneling patterns 🔎 Encrypted traffic patterns often associated with command-and-control communication The traffic may look routine at first. But the signs are there. #NetworkSecurity #ThreatHunting #Mendel

You know the feeling: a dashboard full of critical events and everything looks urgent. A sneak peek at what is coming in Mendel 5.0: the new Risk Score shows how the risk of a specific host has changed over time. Stable since yesterday, or significantly higher than this morning. The analyst opens the system and already knows where to start. #NDR #Mendel #Cybersecurity

🔒 Encryption is coming to OT networks. But what happens to your visibility? Join us for a webinar with our technology partner Garland Technology. Christian Buhrow, Regional Sales Director EMEA, will cover the current state of OT encryption and show how monitoring, forensic analysis, and threat detection can still work reliably in encrypted OT environments. 📅 When: Tuesday, June 30, 2026, 10:00 AM CET 👉 Register here: https://lnkd.in/gMVseNTx #OTSecurity #Mendel #NetworkVisibility

SÚSCCH, a leading Slovak cardiovascular center, runs a complex environment: IT systems alongside specialized medical devices, all handling sensitive patient data. New requirements under the Slovak Cybersecurity Act meant they needed network visibility, and a small IT team needed to manage all of it. They chose GREYCORTEX Mendel for its ability to cover healthcare specifics, including IoMT devices and protocols like DICOM, HL7, Modbus, and BACnet. The visibility paid off quickly. Mendel helped the team uncover virus-infected BYOD devices on the network and flag unauthorised activity like access through Tor. #Healthcare #NDR #Mendel (Read the full case study → link in the first comment)

Recently we celebrated 10 years of GREYCORTEX. Together. After a long while, almost the whole team was in one place again. People who work together every day but live in different countries, who mostly see each other as names in a chat window. The evening shifted fast. Our CEO Petr Chaloupka started by recognising the people who have been here all ten years and made our success happen. Soon after, we were split into teams for a trivia quiz and discovering just how competitive this company really is. Ten years is a milestone worth celebrating. But the best part was simply being together to celebrate it. Thank you to Ira Kononenko for bringing it all together. #GREYCORTEX10 #BirthdayCelebration #TeamSpirit