Ransomware-as-a-Service: How It Works and How to Defend Against It

The average ransom paid by a Canadian organization reached $1.13 million CAD in 2023. Payments climbed almost 150 percent in two years. Behind most of these attacks sits a business, not a lone hacker in a hoodie. Ransomware-as-a-service turns extortion into a product, and it drops the skill needed to run an attack against your network. Understanding the model is your first step toward stopping it.

Ransomware-as-a-service, or RaaS, works like a software subscription for criminals. A core group of developers builds the ransomware and keeps it updated. They sell or lease it to other attackers, called affiliates. The affiliates break into networks and launch the attacks. Both sides split the payment. The Canadian Centre for Cyber Security describes the structure plainly. A core group sells or leases their variant to affiliates, and the developers support each deployment. The model runs like any other software company, except the product locks your files and holds your data hostage.

Why the Model Spread So Fast

RaaS removed the hardest barrier to entry. An attacker no longer needs to write malware. They rent it. Someone with modest skills now runs a campaign built by an expert. The numbers show the result. Global ransomware incidents rose 74 percent in 2023 over the year before. Canadian incidents reported to the Cyber Centre have grown around 26 percent every year since 2021. More attackers, better tools, and a steady supply of stolen credentials feed the growth. A wider criminal market supplies the rest, selling leaked data and ready-made tools to anyone with the money to buy them.

Double Extortion Raises the Stakes

Older ransomware locked your files and demanded payment for the key. Offline backups beat it. So attackers changed tactics. Modern RaaS groups steal your data before they encrypt it. Now you face two threats at once. You pay to get your files back, and you pay again to stop the attackers from leaking your customer records online. Backups alone no longer solve the problem, because stolen data stays stolen. This shift, called double extortion, explains why ransom demands keep climbing and why recovery costs far more than the payment itself.

What This Looks Like in Canada

The damage reaches every sector. LockBit, one of the most active RaaS operations, claimed the London Drugs breach in early 2024 and forced the retailer to close stores across Western Canada. Ontario hospitals shut systems down in late 2023 after ransomware hit a shared IT provider, and patient care suffered for days. The City of Hamilton lost use of municipal systems for weeks in 2024. Suncor faced disruption to Petro-Canada operations. The Cyber Centre names ransomware the top cybercrime threat to Canada’s critical infrastructure, because it disrupts the services people rely on. You find the full picture in the National Cyber Threat Assessment 2025-2026.

Size offers no protection. RaaS affiliates chase the easiest target, not the biggest one. Small and mid-sized Canadian organizations often run lean IT teams, skip offline backups, and delay patches, which makes them the softest way in. Municipalities, clinics, and law firms hold sensitive records and rarely staff a full security team. Attackers know this. They aim for the gap between the data you hold and the defences you run.

How to Defend Against RaaS

Canadian guidance gives you a clear starting point. The Cyber Centre’s Ransomware Playbook sets out the controls to put in place before an attack. Keep two or more backups offline and disconnected from your network, so attackers never reach them. Patch your operating systems, software, and firmware as soon as updates ship, because affiliates hunt for known holes. Segment your network, so a breach in one zone never spreads to your high-value data. Restrict user permissions to the minimum each role needs. Write an incident response and recovery plan, and test it before you need it. These steps will not stop every attempt, but they shrink your attack surface and speed your recovery.

The Skills Behind Ransomware Defence

Tools alone will not save you. RaaS defence needs trained people across four areas. Detection comes first. Someone watches your network for the early signs of an intrusion, the odd logins and lateral movement affiliates rely on. The Certified Cybersecurity Analyst track builds this monitoring and response skill. When an attack lands, you need a plan and a person to run it. The Certified Incident Handling Engineer program teaches you to contain the breach, remove the attacker, and limit the damage.

Recovery decides how fast you return to work. Offline backups mean nothing without a tested restore process. The Certified Disaster Recovery Engineer certification covers business continuity and the recovery planning a ransomware event demands. Above the technical work sits governance. Someone owns the risk decisions, the backup policy, and the reporting to leadership. The Certified Information Systems Security Officer certification prepares managers to lead this effort. Ransomware-as-a-service will keep growing as long as it pays. The organizations training their people now recover in days. The rest lose weeks, and their data along with it.