Rule #1: Always Assume Breach

An important principle in cybersecurity is to use the “assume breach” mentality, using the idea that an attacker has already infiltrated your system. This mindset helps minimize the blast radius of an attack, limit lateral movement around your network, and contain potential breaches before they escalate.

It is hard to imagine a modern company without a stable Internet connection or without services on its local network. Behind this stable infrastructure is an employee who helps keep all systems running smoothly: the network administrator. But who is a network administrator, and why is it such an important role for modern companies?

Here's a fun drinking game for you: take a shot every time you discover a VM in your environment named "test-server," "idk-what-this-does," or "IMPORTANT-DO-NOT-DELETE" that for some reason is running a production workload nobody wants to touch anymore. OK, actually don't do that - you'll need to be sober when the inevitable happens and one of those mystery VMs goes down, taking an entire half of the company's operations with it.

We've just released PRTG version 25.4.114 to the stable release channel.

This version brings you important fixes for the Windows Updates Status (PowerShell) sensor and the VMware Datastore (SOAP) sensor, as well as new capabilities in the PRTG API v2.

When you can't get online, it's more than just frustrating. It's a productivity killer.

Network connectivity problems are more than an inconvenience. They can take your entire business offline. Time wasted staring at a blinking modem waiting to get online.

When connectivity goes down, it's not just obvious how much time is wasted. You can't even easily research solutions. You find yourself jumping through troubleshooting loops trying to find out if the problem is your router, the ISP, or something else entirely.

In 2026, you face a perfect storm of multi-cloud complexity, IT/OT convergence, and tightening regulation. This article gives you a practical outlook on what will change in monitoring, how AI and security trends will shape your decisions, and where solutions like Paessler PRTG can help you turn visibility into advantage for sysadmins responsible for their company's IT infrastructure and Managed Service Providers (MSPs) alike.

How much does IT downtime really cost your organization?

Most executives think it's just an annoying blip on the radar. But if you've ever been on the receiving end of a 3 AM call because the production server went down, you know better. Studies put the number at over $5,000 per minute for large organizations. Per minute. That's the cost of your CEO unable to access email, sales teams locked out of CRM systems, and customers abandoning shopping carts.

[Update] Ironically, as soon as this blog went live, Cloudflare went down! So I will use this opportunity to say... I told you so! Keep reading to find out why.

Someone, at some point in time, (hopefully some kind of professional network engineer) designed your network. They drew a pretty picture with multicolored lines showing traffic flowing between a primary path and a secondary path. Oh, and this plan also had a budget and important management buy-in. Then they moved on to another company, country, or just a better job, and what you've been left with is a Frankenstein's monster of temporary-band-aid solutions to real problems that all became permanent circa 2015. Your so-called redundant paths? One goes down, and the other follows like some kind of tragic Romeo and Juliet situation - it's heartbreaking.

You can't fix what you can't see.

That's the fundamental problem every IT team is up against when trying to keep their network humming along. Right now, there's almost certainly a bandwidthbottleneck building up somewhere in your infrastructure. An unauthorized device plugging into the network. Encrypted traffic containing something it shouldn't. The question isn't whether these things are happening. They are. The question is whether you can actually see them when they do.

Network traffic monitoring is one of the most crucial tasks for any IT professional or sysadmin. Whether you’re troubleshooting performance issues, hunting for security vulnerabilities, or optimizing bandwidth usage, understanding how to effectively monitor network traffic can be the difference between a healthy network infrastructure and costly outages.

It's always DNS. Unless it's not. Then it's the network. Or perhaps the firewall? Or wait, actually, according to Chris in accounting, it's CERTAINLY malware because his nephew 'knows computers'. Welcome to every network performance troubleshooting discussion ever because everyone is an expert and all you get to do is smile politely.

We are excited to announce a major step forward in OT monitoring: PRTG multi-platform probe is now available on the Siemens Industrial Edge Marketplace. This partnership bridges the gap between IT and OT environments. It gives customers better visibility and more direct control over their industrial operations.

Your digital transformation is only as good as the technology that supports it, which is why it's so important to maintain the system health and performance of your infrastructure. Do you have microservices or distributed systems to keep track of? Cloud-native apps, container workloads, Kubernetes environments, or multicloud systems? You need to see what's happening across your entire IT landscape, and the critical question is, how do you do that?

Throughout 2025, our Monitoring Matters webinar series has been packed with practical advice, live demos, and expert tips to help you monitor the most important components of your IT infrastructure. Whether you’re monitoring network devices, virtualization, physical servers, power, or storage, these sessions are packed with information you can immediately put into practice.

Network loops are one of the few pieces of evidence that the universe loves to laugh at us. Somewhere, right this minute, a five-dollar Ethernet cable is taking down a million-dollar infrastructure. An innocent intern trying to get internet in the conference room has both ends of a patch cable plugged into the same switch, and now 500 employees are staring at the spinning wheel of doom. Meanwhile, the CEO's slideshow presentation is stuck on the same slide for the umpteenth time, and the accounting department rocking back and forth crying, "Remember the good old days of the pre-internet world?"

Manual network configuration is slow, error-prone, and doesn’t scale. Human error causes 70-75% of all network outages, and the average cost of 1 hour of network downtime has now surpassed $300,000 for enterprise organizations. Network automation helps solve both issues by eliminating manual configuration tasks and introducing consistency across your entire infrastructure.

If you're using an RMM (Remote Monitoring and Management) solution or IT management tool, you may ask yourself if you need another piece of monitoring software as well. The question is valid, and we get it. Many IT professionals and sysadmins want to know how using Paessler PRTG Network Monitor can benefit them when they already have an endpoint or patch management tool.

Monitoring network devices is a must-have for network admins, but they need to do it securely. The Simple Network Management Protocol (SNMP) has helped millions of admins collect information and monitor networks over the past several decades. SNMP has had security improvements over the years, and that has resulted in three versions, v1, v2c, and v3, but the first two send information unencrypted.

You're on a video call with a client when suddenly their voice turns into a garbled mess of stuttering syllables. The screen freezes mid-sentence, and by the time the video catches up, you've missed half the conversation. Sound familiar? That's network jitter at work, and it's the silent killer of real-time communication.