How Ransomware Works: The Five Objectives of Every Attack
Mon Feb 02 2026
Understanding how ransomware works is critical for anyone responsible for protecting their organization's data. In this episode of The Backup Wrap-up, we examine the five core objectives that drive nearly every ransomware attack - from initial access through the final ransom note delivery.
I'm joined by my co-author Dr. Mike Saylor as we kick off what's going to be a comprehensive series on our new book, "Learning Ransomware Response and Recovery." We start at the beginning: how do these attackers even get in? Mike breaks down the role of initial access brokers (IABs) - the bad guys who specialize in harvesting and selling credentials. We talk about why email phishing remains the cheapest and most statistically reliable attack vector, even with all our defenses.
From there, we walk through lateral movement and reconnaissance. Once attackers are inside your network, they're not sitting idle. They're mapping your environment, identifying your crown jewels, and figuring out where your backups live. The "phone home" phase establishes command and control, letting attackers coordinate their activities and receive instructions.
We dig into data exfiltration and the rise of double extortion. It's not enough anymore to just encrypt your data - attackers are stealing it first, threatening to publish it even if you can restore from backups. Mike shares some fascinating details about how sophisticated ransomware can be, including variants that examine file headers rather than just extensions to find valuable targets.
The encryption phase itself is resource-intensive, and Mike explains why you might actually notice your computer acting weird if you're paying attention. Your mouse hesitates, typing lags, the network slows down - these are all potential warning signs.
Finally, we cover how ransom notes are delivered today. Spoiler: it's not the old-school desktop background takeover anymore. Modern ransomware drops text files in every folder it touches, making sure you can't miss the message.
This episode sets the foundation for understanding how ransomware works, which is the first step in defending against it and recovering when prevention fails.
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Understanding how ransomware works is critical for anyone responsible for protecting their organization's data. In this episode of The Backup Wrap-up, we examine the five core objectives that drive nearly every ransomware attack - from initial access through the final ransom note delivery. I'm joined by my co-author Dr. Mike Saylor as we kick off what's going to be a comprehensive series on our new book, "Learning Ransomware Response and Recovery." We start at the beginning: how do these attackers even get in? Mike breaks down the role of initial access brokers (IABs) - the bad guys who specialize in harvesting and selling credentials. We talk about why email phishing remains the cheapest and most statistically reliable attack vector, even with all our defenses. From there, we walk through lateral movement and reconnaissance. Once attackers are inside your network, they're not sitting idle. They're mapping your environment, identifying your crown jewels, and figuring out where your backups live. The "phone home" phase establishes command and control, letting attackers coordinate their activities and receive instructions. We dig into data exfiltration and the rise of double extortion. It's not enough anymore to just encrypt your data - attackers are stealing it first, threatening to publish it even if you can restore from backups. Mike shares some fascinating details about how sophisticated ransomware can be, including variants that examine file headers rather than just extensions to find valuable targets. The encryption phase itself is resource-intensive, and Mike explains why you might actually notice your computer acting weird if you're paying attention. Your mouse hesitates, typing lags, the network slows down - these are all potential warning signs. Finally, we cover how ransom notes are delivered today. Spoiler: it's not the old-school desktop background takeover anymore. Modern ransomware drops text files in every folder it touches, making sure you can't miss the message. This episode sets the foundation for understanding how ransomware works, which is the first step in defending against it and recovering when prevention fails.