Until recently, achieving full network visibility was a privilege reserved for large enterprises. Advanced monitoring required significant capital investment, specialized security teams, and lengthy deployment cycles. Today, IT teams, particularly those across Europe, face heightened complexity, limited staff, and growing regulatory pressures. The threat landscape is constant, but the ability to manage it varies widely.

Making Enterprise Visibility Accessible

Managed monitoring changes the operational equation for organizations that cannot afford a dedicated 24/7 Security Operations Center (SOC). It provides many benefits similar to SOC as a Service (SOCaaS) but avoids the complexity and infrastructure burden of building a full security function internally.

With technologies like GREYCORTEX Mendel (a Network Detection and Response, or NDR, solution), providers can offer the same depth of insight previously only accessible to major corporations.

The core value is simple: organizations finally gain clarity into what is happening inside their network. They can spot misconfigurations, detect unauthorized connections, and notice the early signs of malicious activity. For many, this is the first time they can verify whether their segmentation and firewall rules are effective against real-world traffic.

How Service-Based Monitoring Works in Practice

This model is exemplified by partners like SOC360 in Poland. They combine Mendel’s deep visibility with their own expert monitoring and response processes, providing predictable costs, quick deployment, and continuous expert oversight.

Key Components of a Managed NDR Service:

• ✅ Continuous network and log monitoring, providing a constant pulse on system health.
• ✅ Detection of hidden threats, unauthorized access attempts, and policy violations using behavioral analysis.
• ✅ Investigation support using historical metadata and full-context analytics for rapid root cause analysis.
• ✅ Monthly reporting and guidance with clear, actionable recommendations for IT teams.

For many organizations, this replaces reliance on assumptions and isolated alerts with insights supported by data and clear recommendations.

Scaling Up: Visibility for Mature Security Teams

For larger organizations that maintain their own SOC, the approach shifts. Instead of outsourcing, they integrate GREYCORTEX Mendel directly into their environment. In these setups, deep network visibility becomes a powerful analytical advantage.

In-house SOC teams gain a clear view of device communication, user behavior, and performance trends over time. Crucially, they access historical data that traditional log-centric tools often cannot provide. This depth speeds up investigations, reduces noise, and helps analysts understand not only that something happened, but also how and why it occurred.

Conclusion: Visibility That Fits Any Security Maturity

Network security monitoring proves that meaningful visibility is no longer limited by the size of your security team. Smaller companies gain critical clarity without building a SOC, while mature environments enhance their detection and investigation workflows through deeper network context.

GREYCORTEX Mendel supports both needs: it enables providers to deliver reliable monitoring as a service, and it gives enterprise SOCs the analytical depth required to manage complex infrastructures. The objective remains the same: reduce uncertainty, speed up response, and create a network environment where hidden activity is harder to ignore.

When people envision cybersecurity, they often default to a highly technical, male-dominated image. The reality, particularly at events like the recent Ženy v kyber (Women in Cyber) conference in the Czech Republic, paints a different picture—one focused on stories, curiosity, and the determination to enter a new field.

We were proud supporters of the event, as diversity is a core principle at GREYCORTEX. Approximately one-third of our team are women, playing vital roles across every department: development, product, marketing, sales, and technical support. Each of them followed a unique trajectory into cybersecurity. Let’s explore what brought them here.

Curiosity, Coincidence, and Determination

The journey into cybersecurity is rarely linear. Some arrive naturally, while others find their way almost by chance.

• Minh, a developer, was drawn by the field’s broad scope—from mathematics and cryptography to programming and data analysis. “What drew me most,” she says, “was that the work has real impact, even on a national level. And, of course, I liked the idea of using my analytical mind to fight the bad guys.”

• Aja, our marketing manager, started by coincidence after writing about tech companies during parental leave. “When they later opened a marketing role, I didn’t hesitate,” she laughs.

Regardless of their starting point, the consensus is that the field’s fast pace and energy keep them engaged. As Monika, our Country Manager for Poland, notes: “I like people, and I like when things happen, and in cybersecurity, things are always happening.”

Cybersecurity is not exclusively reserved for people with traditional technical degrees. What truly counts is persistence, curiosity, and a dedication to lifelong learning.

Breaking Down Stereotypes

Though outdated stereotypes of cybersecurity being solely a “men’s field” are fading, many women still encounter them in professional and everyday situations.

• Bára, a security analyst, recalled an instance when a shop assistant only accepted her complaint about a faulty router after she meticulously listed every technical test she had already performed on the device.

• Saša from the product team experienced similar subtle bias at university, which, rather than discouraging her, served as a strong motivator: “Those moments motivated me to keep improving, to be consistent, and confident in my work.”

From the HR perspective, there is growing awareness of the value women bring. Ira from HR states, “I often hear that teams want more women because they bring a different way of thinking and communicating.”

At GREYCORTEX, success is measured by results and expertise, not background or gender. Women on our team lead major projects, design products, analyze network traffic, and run international business operations. They find respect, equal opportunities, and space to grow.

The Human Side of Cybersecurity

When asked what draws people to the field, conference participants cited remarkably similar answers: constant learning, variety, and the feeling that their work has a tangible, real-world impact.

What resonated most was the sense of community. Behind the complex systems are people who share knowledge and support each other, underscoring that security is fundamentally about collaboration and trust.

Supporting Women in Cybersecurity

The message from the confident, curious, and inspiring women of GREYCORTEX to anyone considering the field is clear:

At GREYCORTEX, we prove every day that diverse perspectives make teams stronger, more creative, and ready for any challenge ahead.

Want to be sure your DNS setup isn’t weakening your security or network performance? GREYCORTEX experts highlight the most frequent mistakes from countless network audits. This guide breaks them down with practical examples and clear steps for remediation. 

DNS plays a far greater role than simply resolving names to IP addresses. It shapes where users are redirected and reveals which servers devices connect to. DNS traffic is powerful: whoever controls or intercepts it can redirect users, map internal services, or extract sensitive data. That is why DNS remains one of the most overlooked but impactful parts of network security.

Unrestricted DNS Port 53 as a Security Risk

In many networks, outbound port 53 is left completely open, meaning any internal device can connect to any device on the Internet. This critical vulnerability allows attackers to create a DNS tunnel to send arbitrary data through, often hidden within DNS queries. For example, using software like Iodine, they can establish a reverse SSH tunnel from the Internet to the internal network, creating permanent, undetected access.

From an analyst’s perspective, this looks like normal communication with a legitimate DNS server, but a closer look at data patterns—such as constantly changing third-order domain names (e.g., `freemovies.tk`) or the use of unusual record types (like NULL in the `rrtype` attribute)—betrays the presence of tunneling attempts.

Remediation Tips from GREYCORTEX Experts:

When Port 53 Is Legally Needed: If port 53 must remain open for corporate resolvers or authorized external providers, restrict it only to those trusted resolvers. Additionally, audit devices that attempt direct resolution against Internet DNS servers, as this often signals malware activity.

Uncontrolled Encrypted DNS (DoH and DoT)

Encrypted DNS protocols like DNS over HTTPS (DoH) on port 443 and DNS over TLS (DoT) on port 853 are designed for user privacy but create significant blind spots in corporate networks. They hide DNS traffic inside encrypted sessions, preventing inspection and policy enforcement. Attackers can leverage these methods to tunnel data, bypass corporate resolvers, or maintain persistence.

While DoT (port 853) is generally easier to block, DoH (port 443) is much harder because it masquerades as normal HTTPS traffic.

Remediation Tips from GREYCORTEX Experts:

Using Unregistered or External Domains

During audits, experts found cases where companies created secondary domains (e.g., `company2v.com`) but failed to register or control them. When administrators set up proxy servers via Windows Group Policy (GPO), workstations attempted to reach a non-existent, externally owned domain (e.g., `wpad.company2v.com`) to fetch settings.

Since the external party controlled the domain, they could redirect internal corporate devices to any server on the Internet, opening the door for man-in-the-middle attacks—delivering malware under the guise of legitimate updates. A minor oversight in domain registration became a direct attack path.

Remediation Tips from GREYCORTEX Experts:

Misspellings in DNS Server IP Addresses

Not all DNS errors stem from complex attacks; sometimes, they are simple human mistakes. Typos in DNS server configurations—like mistyping Google’s resolvers or private IP ranges—are frequently encountered.

While user systems catch these quickly, errors on manually configured devices (like IoT equipment) can persist unnoticed, preventing critical updates or causing hidden communication failures. In the worst case, a typo may resolve to a legitimate Internet DNS server, causing internal queries to leak outside the company network.

Remediation Tips from GREYCORTEX Experts:

Why DNS Hygiene Demands Constant Attention

Modern attackers do not need to break firewalls if DNS gives them a way in. Unrestricted queries on port 53, tunneling hidden inside DoT/DoH, unregistered domains, or misconfigured servers all provide silent channels for persistence or data exfiltration. Continuous auditing and long-term monitoring are the only ways to uncover these errors before they escalate into outages or breaches.

GREYCORTEX Mendel provides you with visibility into your DNS traffic, alerts on unauthorized resolvers, and detects tunneling patterns.

The threat of ransomware is constantly evolving, and traditional security tools are struggling to keep up. This is largely because ransomware has become a sophisticated business model, fueled by the availability of “Ransomware-as-a-Service.” This model allows individuals with very little technical skill to launch professional-grade attacks. Traditional defenses like firewalls and endpoint protection platforms (EPPs) are no longer sufficient because they leave significant blind spots, especially with unmanaged devices such as printers, scanners, and IoT devices that cannot run an endpoint agent.

The core principle for effective ransomware detection is comprehensive network visibility. Every stage of a ransomware attack, from the initial compromise to data exfiltration, leaves a detectable trace in network traffic. By mapping the stages of an attack to the MITRE ATT&CK framework, we can see how network monitoring can reveal malicious activity:

• Initial Access: Unauthorized user logins or connections to external systems.
• Execution: The start of a new process or suspicious PowerShell command.
• Persistence: The creation of new user accounts or scheduled tasks.
• Privilege Escalation: Network access to administrator accounts or servers.
• Lateral Movement: Communication between endpoints that normally don’t interact.
• Command and Control: Connections to suspicious IP addresses or domains.
• Exfiltration: Large data transfers to external, unknown servers.

A solution like GREYCORTEX Mendel is designed to provide this essential network visibility. Mendel monitors the behavior of the entire network infrastructure, using machine learning and behavioral analysis to detect malicious activity. This is effective even on devices where endpoint protection cannot be deployed.

Beyond active detection, a network-based approach also aids in post-attack compromise assessment. By continuously monitoring for hidden backdoors and “keep alive” connections, it helps ensure the network is truly clean after remediation, preventing attackers from returning later.

A solution like Mendel is a crucial component of a modern cybersecurity ecosystem. By providing deep network visibility, it not only helps stop active attacks but also strengthens long-term network resilience. This holistic approach ensures that your defenses are prepared for a ransomware attack at every stage of its lifecycle.