Cybercrime-as-a-Service (CaaS) is a criminal business model in which specialized actors sell, rent, or otherwise provide tools, data, access, infrastructure, or support that others use to commit cybercrime. It divides criminal work among providers and customers: one actor supplies a capability, while another uses it. That can lower the technical barrier for less-skilled criminals and let experienced groups outsource specialist tasks.
How the CaaS model works
A provider packages a capability that another criminal actor needs. The offer might be malicious software, access to a compromised system, attack infrastructure, stolen data, or operational support. Europol’s 2014 Internet Organised Crime Threat Assessment describes this broader criminal toolkit as including malware, supporting infrastructure, stolen personal and financial data, and ways to monetize criminal gains.
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Marketplaces, forums, and chat platforms can connect buyers and sellers. The Canadian Centre for Cyber Security describes these venues as places where criminals buy or sell tools and services; Microsoft’s October 2025 explainer notes that transactions may be one-off or ongoing. These are possible arrangements, not a single standard CaaS marketplace or payment system.
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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesThe customer and provider do not necessarily share the work equally. A provider may supply a ready-to-use capability, while a customer selects targets and carries out an operation. In other cases, a service may include continuing support or a relationship in which proceeds are shared. The exact division depends on the offering.
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Common types of cybercrime-as-a-service
The names below identify the criminal function being supplied. They are examples within the broader CaaS model, not interchangeable labels for one product or arrangement.
| Type | What the service provides |
|---|---|
| Malware-as-a-Service | Malicious software or related capabilities offered to other criminals. |
| Ransomware-as-a-Service (RaaS) | A core group supplies ransomware and may support affiliates who deploy it. The Canadian Centre for Cyber Security describes possible arrangements including upfront fees, subscriptions, profit shares, or combinations. |
| Phishing-as-a-Service | Tools or services that help other actors conduct phishing. |
| Access-as-a-Service | Access credentials or access to compromised systems supplied to another actor. |
| DDoS-as-a-Service | Distributed denial-of-service capacity or related attack services. |
| Exploits-as-a-Service | Exploit capabilities supplied to customers for criminal use. |
Authorities have also described services involving criminal hosting and infrastructure, data theft, password cracking, and tools for concealing malware or obscuring illicit payments. The particular categories and labels vary by source; there is no single settled taxonomy that covers every offering.
CaaS is not the same as RaaS
CaaS is the umbrella term; RaaS is one narrower example. RaaS describes an arrangement in which a ransomware operation makes its software and sometimes supporting services available to affiliates. Other CaaS offerings may supply access, phishing capabilities, infrastructure, or other parts of the criminal toolkit instead.
Sources also use the term Crime-as-a-Service for the wider division of criminal work into capabilities that can be purchased or rented. Europol’s 2014 assessment uses that terminology. CaaS and Crime-as-a-Service overlap, but wording and category boundaries differ across authorities and cybersecurity sources.
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Why criminals use CaaS
- It can lower the skills barrier. A customer may use a capability developed by a specialist rather than create it independently.
- It lets experienced groups outsource. More capable actors can obtain specialist tools or infrastructure instead of building every part of an operation themselves.
- It enables division of labor. Providers, access sellers, affiliates, and operators may play different roles, with connections that are transactional or temporary rather than part of one hierarchical group.
In his August 2022 FBI oversight testimony, FBI Director Christopher Wray summarized the effect this way: “It is not that individual malicious cyber actors have become much more sophisticated, but—unlike previously—they are able to rent sophisticated capabilities.”
EMOTET: an example of an enabling service
EMOTET illustrates how one criminal service can enable additional actors and offenses. Eurojust reported that its malware infrastructure was offered for hire as a way to install further malware. Access obtained through that infrastructure could then be sold to other groups for activities including botnet operation, data theft, or ransomware extortion.
In January 2021, authorities in an internationally coordinated action took control of and disrupted the infrastructure. The case shows why enforcement can target an enabling layer, not only the criminals who carry out later crimes. It is a dated example, not evidence that the same infrastructure remains active.
What the term does—and does not—tell you
The label CaaS identifies a business model, not one fixed tool, transaction, or measure of harm. A service may be sold once, rented, offered by subscription, or linked to an affiliate or profit-sharing arrangement. The provider may supply a payload, access, infrastructure, data, or support, and the customer may perform some or all of the subsequent criminal activity.
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The Canadian Centre for Cyber Security’s National Cyber Threat Assessment 2025–2026 states: “With CaaS (Cybercrime-as-a-Service), specialized threat actors sell stolen and leaked data and ready-to-use malicious tools to other cybercriminals online, enabling their illicit activities.” This is a useful description of the model, but it does not establish one standard structure for every CaaS offering.
There is no single overall statistic in the cited assessments that measures the size or prevalence of CaaS as a whole. For example, Canadian fraud losses reported by the Canadian Centre for Cyber Security—CAD 383 million in 2021, CAD 530 million in 2022, and CAD 567 million in 2023—are fraud-loss figures for Canada, not a measure of CaaS market size or losses attributable to CaaS.
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