What Is Ransomware? Prevention & Recovery for Canadian Businesses (2026)
Updated June 2026 · Vendor-neutral guidance for Canadian businesses · Implementation by IT Cares
Ransomware is malware that encrypts your files and demands payment to unlock them. For Canadian businesses, the proven defence is offline/immutable backups, MFA on every account, prompt patching and endpoint protection. Canada's Cyber Centre advises against paying — recover from a clean backup instead.
What is ransomware?
Ransomware is a type of malicious software that encrypts a victim's files — or entire systems — and demands a ransom, usually in cryptocurrency, for the decryption key. Modern strains also steal data first and threaten to leak it ("double extortion"). The Canadian Centre for Cyber Security (cyber.gc.ca) names ransomware the number-one cyber threat to Canadian organizations.
How does ransomware get into a business?
Most attacks start in one of three ways: a phishing email with a malicious link or attachment, a stolen or reused password used to log in remotely, or an unpatched internet-facing system. Once inside, the malware spreads to anything the compromised account can reach — including connected backup drives. Cutting off these entry points is most of the defence.
How do you prevent ransomware?
Layer a few inexpensive controls: keep at least one offline or immutable backup the malware cannot reach, enforce multi-factor authentication everywhere, patch operating systems and apps promptly, run managed endpoint protection (EDR), and limit admin rights to who truly needs them. No single control is enough; together they remove the paths ransomware needs.
Should a Canadian business pay the ransom?
The Canadian Centre for Cyber Security and the RCMP advise against paying. Payment funds organized crime, does not guarantee you get your data back, and marks you as a willing target for repeat attacks. With a tested offline backup you can usually restore without paying. Always get professional incident-response advice before deciding.
What to do in the first hour of a ransomware attack
Disconnect affected machines from the network and Wi-Fi to stop the spread — but do not power them off blindly, as that can destroy forensic evidence. Identify what is encrypted, preserve logs, check your offline backups, and notify your incident-response contact. Under PIPEDA and Quebec's Law 25 you may be legally required to report a breach that poses a real risk of harm.
Key stat
74% of Canadian ransomware victims that were surveyed paid in 2025 — yet payment does not guarantee recovery. A tested offline backup is the only reliable way to get your data back without funding the attacker.
At a glance
| Defence layer | What it does | Relative cost |
|---|---|---|
| Offline / immutable backup | Lets you restore without paying — the single most important control | Low |
| MFA on every account | Stops the stolen-password logins behind most intrusions | Free–Low |
| Prompt patching | Closes the unpatched holes attackers scan for | Free (time) |
| Managed endpoint protection (EDR) | Detects and isolates malware behaviour, not just known viruses | Low–Med |
| Least-privilege access | Limits how far an attack can spread | Free (config) |
Rather have it done for you? IT Cares offers ransomware recovery and incident response.
FAQ
What is ransomware in simple terms?
Ransomware is malware that locks your files by encrypting them, then demands a payment to unlock them. Some strains also steal the data and threaten to publish it unless you pay.
How do small businesses prevent ransomware?
Keep offline/immutable backups, enforce MFA on all accounts, patch promptly, run managed endpoint protection, and limit admin rights. Together these block almost every attack and make any breach survivable.
Should I pay the ransom?
Canada's Cyber Centre advises against it. Paying funds crime, doesn't guarantee recovery, and marks you as a target. With a clean offline backup you can usually restore without paying — get incident-response help first.
Do Canadian businesses have to report a ransomware attack?
Often yes. Under PIPEDA and Quebec's Law 25, a breach that poses a real risk of significant harm must be reported to regulators and affected individuals. Build this step into your incident-response plan.
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