Ransomware detection has become one of the most critical capabilities any organization can develop. The statistics are sobering—if you’re connected to the internet with users accessing email and websites, ransomware should be at the top of your risk assessment list. But here’s the problem: most organizations don’t know where to start when it comes to building effective ransomware detection capabilities.
This blog post summarizes the main points of my latest podcast episode. If you’d like, you can listen to it or watch it at https://www.backupwrapup.com/
The Strange Symptoms of Ransomware Attacks
One of the most fascinating aspects of ransomware detection is recognizing the warning signs before encryption happens. Mike Saylor from Black Swan Security shared some eye-opening examples of how attacks manifest in unexpected ways. Your users might complain that their computers are running slowly, or they can’t stream video during lunch breaks. In one case, a smart dishwasher started malfunctioning—not because it was the target, but because polymorphic malware was interrogating it to determine whether it was worth attacking.
Polymorphic malware is particularly sneaky because it changes based on what it discovers in your environment. This type of ransomware doesn’t want to trigger alarms by attacking low-value targets like IoT devices. Instead, it probes systems, looking for the crown jewels—your critical servers, databases, and backup systems. When it moves on from systems it doesn’t want to infect, it often deletes itself, leaving IT teams scratching their heads about what caused those strange symptoms.
The challenge with ransomware detection based on user reports is that help desk teams often dismiss these complaints as user error or normal performance issues. That’s especially true if the organization hasn’t experienced a ransomware attack before. Once you’ve been hit, teams become much more suspicious of weird behavior. But by then, you’ve already learned the hard way why proactive ransomware detection matters.
Understanding the Ransomware Detection Technology Stack
The acronym soup of security tools can be overwhelming: EDR, XDR, SIEM, SOAR. What do these actually mean, and which ones do you need for effective ransomware detection?
Let’s start with EDR—Endpoint Detection and Response. These tools monitor individual devices like laptops, desktops, and servers for signs of malicious activity. Think of tools like CrowdStrike. They’re your first line of defense for ransomware detection on the devices your employees use every day.
XDR—Extended Detection and Response—sits at the top of your security stack. It’s a platform that consolidates alerts and data from multiple security tools, including your SIEM, EDR, network security, and even physical security systems like badge readers. True XDR includes network layer visibility that pure EDR solutions miss. Some vendors claim they offer XDR when they’re really just offering managed EDR services, so be careful.
SIEM—Security Information and Event Management—collects and analyzes log data from across your environment. It’s one of the feeds into your XDR platform, providing crucial context for ransomware detection by correlating events from different sources.
SOAR—Security Orchestration and Automated Response—is where the magic happens. This technology automates your incident response playbooks. When your ransomware detection systems identify a threat, SOAR can automatically disable user accounts, revoke access tokens, quarantine infected endpoints, and block malicious IP addresses in milliseconds instead of the hours it would take humans to respond manually.
Building Your Ransomware Detection Strategy on a Budget
Here’s the biggest misconception about ransomware detection: that it’s only for large enterprises with massive budgets. Mike shared examples of two-person companies working out of garages that have implemented effective ransomware detection capabilities because they understood their risk profile.
The key is starting with the fundamentals. If you’re not connected to anything, you can’t get infected—but you also can’t do any work. So you build from there. What do your users need to do their jobs? They need internet access for specific websites. They need email. Each capability you add increases your attack surface, but there are ways to mitigate those risks.
Many organizations already own security tools with capabilities they don’t use. Office 365 includes ransomware detection and security features that most companies never configure properly. Before you buy new tools, learn how to use what you’ve already paid for.
When you do need to invest in ransomware detection tools, consider whether to expand licensing with your existing vendors or add best-of-breed solutions. More tools mean more complexity and overhead, but they might be more cost-effective than expensive add-ons from your current providers.
The Critical Importance of 24/7 Monitoring
One of the most important points about ransomware detection is timing. Attackers don’t work nine-to-five. They specifically target nights, weekends, and holidays when they know your team isn’t watching. A common pattern is Thursday after midnight—they want the ransomware to do its damage over the weekend when you’re not at work and response will be delayed.
This is why ransomware detection requires round-the-clock monitoring. You need someone—whether internal staff or a managed security service provider—watching your systems 24 hours a day, seven days a week. The difference between catching an attack in minutes versus hours can mean the difference between minimal damage and complete business disruption.
Some organizations have internal teams during business hours and contract with MSSPs for nights, weekends, and holidays. This hybrid approach can be cost-effective and provide the continuous ransomware detection coverage you need.
The Hidden Vulnerability in Managed Service Providers
There’s a ransomware detection challenge that many organizations don’t consider: their managed service providers might be their biggest vulnerability. MSPs support multiple clients, and for efficiency, they often use the same credentials to access all of them. These are called “coincidental passwords.”
When one of these MSPs gets compromised, attackers suddenly have access to dozens or even hundreds of client environments. Users might report seeing their mouse moving on its own or windows opening and closing—signs of remote access that persists from the compromised MSP. This is why vetting your service providers’ security practices is just as important as implementing your own ransomware detection tools.
Prioritizing Based on Your Business Model
Not every organization needs the same ransomware detection tools. A company with mostly remote workers needs to prioritize endpoint protection because those devices are the primary access point to company resources. A data center hosting virtual machines for clients needs to focus on perimeter security and network monitoring.
Before investing in ransomware detection technology, understand your business. Where is your critical data? How do your employees work? What systems would bring your business to a halt if they went down? Your answers to these questions should drive your ransomware detection priorities.
The Bottom Line on Ransomware Detection
At its core, effective ransomware detection comes down to three things: visibility, expertise, and speed. You need visibility into what’s happening across your entire environment. You need expertise to configure tools properly and interpret alerts correctly. And you need speed to respond before attackers can accomplish their objectives.
For many organizations, especially small to medium-sized businesses, partnering with a managed security service provider is the most practical path to effective ransomware detection. You get access to tools, expertise, and 24/7 monitoring without having to build and maintain those capabilities internally.
But whether you handle ransomware detection in-house or outsource it, the key is to start. Understand your risks, implement basic protections, and build from there. Even diligent user behavior—thinking before clicking links, opening attachments, or scanning QR codes—provides a foundation for ransomware detection efforts. Make friends in the cybersecurity community who can answer your questions and share their experiences.
Ransomware detection isn’t optional anymore. It’s a fundamental business requirement. The good news is that effective protection is within reach for organizations of any size if you approach it strategically and get the right help.
Written by W. Curtis Preston (@wcpreston), four-time O'Reilly author, and host of The Backup Wrap-up podcast. I am now the Technology Evangelist at S2|DATA, which helps companies manage their legacy data
