Ransomware attacks targeting Montreal businesses 2026

It's 9:15 on a Wednesday morning. Your office manager opens her laptop, clicks on what looks like a routine email from your accounting software provider, and within seconds, every file on your server is locked behind a 256-bit encryption key. A message appears on every screen in your office demanding $85,000 in Bitcoin. Your client records, financial data, project files — gone. Your business is paralyzed.

This isn't a hypothetical. This is Tuesday in Montreal right now.

Ransomware attacks targeting Canadian businesses have surged dramatically in the past 18 months, and Montreal businesses are increasingly in the crosshairs. Whether you run a mid-sized engineering firm in Ville-Saint-Laurent, a financial services company downtown, or a logistics operation on the South Shore, if you have data worth protecting — and you do — you are a target.

After more than two decades of protecting Canadian businesses from exactly these kinds of threats, we have watched ransomware evolve from a nuisance into a full-blown business crisis. The groups running these attacks are sophisticated, patient and increasingly focused on mid-sized Canadian businesses that have valuable data but not enterprise-level security budgets.

Let's break down exactly what's happening and what you can do about it.

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What is the most targeted industry for ransomware attacks?

If you think ransomware only goes after banks and hospitals, think again. According to a 2025 analysis by Comparitech, manufacturing is now the most targeted sector for ransomware attacks globally, surpassing healthcare for the first time. Ransomware groups ran more attacks against manufacturing than any other industry on the planet last year, with global ransomware incidents rising 32% to 7,419 total attacks.

But manufacturing is not alone. Professional services, finance, construction, real estate and logistics — the industries that make up the backbone of Montreal's business community — are all seeing significant increases in targeted attacks.

Why? Because these businesses share a common profile: they hold valuable data, they depend heavily on operational uptime, and they often have just enough IT infrastructure to be worth attacking but not enough security to stop it.

A construction company that cannot access its project management system loses thousands of dollars an hour. A financial services firm that cannot access client portfolios faces regulatory exposure on top of operational paralysis. Ransomware groups know this, and they price their demands accordingly.

What Canadian companies have had a data breach?

You do not have to look far. In recent weeks alone, Rogers Communications and Freedom Mobile both confirmed data breaches affecting their customers' information. Quebecor Inc. QBR-B-T has also been impacted. These are major Canadian telecommunications companies with significant security budgets — and they still got hit.

If it can happen to Rogers, it can happen to your 45-person engineering firm.

The reality is that Canadian businesses of all sizes are being targeted. According to the Canadian Centre for Cyber Security's National Cyber Threat Assessment, Canadian organizations across all sectors face persistent and increasing threats from ransomware actors, many of whom specifically seek out mid-sized businesses because they are perceived as having weaker defenses than large enterprises while still holding enough data to make a significant ransom demand worthwhile.

Montreal businesses face an additional layer of exposure. Operating in a bilingual market with cross-border US business relationships means your data often has higher value to attackers — client lists, financial records, legal documents and intellectual property that exist in both English and French, tied to a North American business ecosystem that attackers find particularly lucrative.

Where do 90% of all cyber incidents begin?

One word: phishing.

According to CISA, more than 90% of successful cyberattacks — including ransomware — start with a phishing email. A link that looks legitimate. An attachment that appears routine. An invoice from a vendor you recognize. Your employee clicks it, and the attack begins.

This is both terrifying and reassuring. Terrifying because it means your biggest vulnerability is sitting at a desk answering emails right now. Reassuring because it means that with the right combination of technical controls and employee training, you can stop the vast majority of attacks before they start.

Modern phishing attacks are not the clunky "Nigerian prince" emails of 2005. Today's phishing attempts are AI-generated, grammatically perfect, and contextually relevant to your business. Attackers research your company, your vendors, your executives and your clients before crafting emails that are almost indistinguishable from legitimate correspondence.

At Resitek, we have been training Canadian employees and deploying email security solutions for over 20 years. The difference between a company that gets hit and one that does not often comes down to whether their people know what to look for — and whether their technical defenses catch what human eyes miss.

What are the top 3 targeted industries?

According to a 2026 cyber threat report by CloudSEK, the three most targeted industries for ransomware and cyberattacks are healthcare, manufacturing and financial services, driven by the high value of their data and the operational urgency that makes downtime unbearable.

But here is what that means for you even if you are not in one of those three sectors: attackers do not always go after the most secure target in the chain. They go after the weakest link. If your business serves clients in finance, healthcare or manufacturing — as an accounting firm, a logistics provider, an IT vendor, a legal firm — you become an attractive entry point.

Supply chain attacks are one of the fastest-growing ransomware vectors in Canada right now. An attacker compromises a smaller vendor with access to a larger target's systems, and suddenly your client's data breach becomes your liability, your reputation problem and your legal exposure.

This is exactly why cybersecurity for Montreal businesses cannot be treated as a standalone issue. It is an ecosystem problem that requires a comprehensive approach — and a partner who understands the full picture.

Is your business the weakest link in your clients' supply chain?

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What is the 3/2/1 rule for ransomware?

If there is one thing every Montreal business owner should memorize before finishing this article, it is the 3/2/1 backup rule. It is the single most effective ransomware defense that does not require a computer science degree to understand.

Here is how it works:

3 — Keep three copies of any important data. Your original plus two backups.

2 — Store those copies on two different types of media. For example, one on your local server and one on cloud storage.

1 — Keep one copy completely off-site and offline, disconnected from your network entirely.

Why does the offline copy matter so much? Because modern ransomware does not just encrypt your active files — it actively searches for and destroys connected backups before triggering the encryption. If your backup is attached to your network, it is not really a backup in a ransomware scenario. It is just more data to encrypt.

According to the National Institute of Standards and Technology (NIST), organizations that follow the 3/2/1 rule and test their backups regularly are significantly more likely to recover from a ransomware attack without paying the ransom.

The operative word there is test. We have onboarded clients who thought they had solid backups, only to discover during a recovery scenario that their backups had been silently failing for months. A backup you have never tested is not a backup — it is wishful thinking.

What's the best defense against ransomware?

There is no single silver bullet, but there is a layered approach that works — and it is what we have been deploying for Canadian businesses for over two decades.

Email security and phishing protection is your first line of defense. Since 90% of attacks start with phishing, stopping malicious emails before they reach your employees is critical. Modern email security platforms use AI to detect and quarantine suspicious messages in real time.

Endpoint detection and response (EDR) goes beyond traditional antivirus. EDR solutions monitor every device on your network for suspicious behavior, not just known malware signatures. When ransomware begins to execute, EDR can detect the behavioral patterns and stop the encryption process before it spreads.

Multi-factor authentication (MFA) on every account, every application, every system. This alone stops a massive percentage of credential-based attacks that precede ransomware deployment.

Network segmentation means that if one part of your network is compromised, the attacker cannot freely move to other systems. Think of it as fire doors in a building — the fire may start in one room, but it does not have to consume the whole floor.

Employee security awareness training is non-negotiable. Your people are your first line of defense and your biggest vulnerability. Regular, practical training that simulates real phishing attempts is the most cost-effective security investment most mid-sized businesses can make.

And of course, proactive monitoring and managed detection — which is what a good MSP does 24 hours a day, 7 days a week. At Resitek, our monitoring systems are watching your network around the clock, flagging anomalies before they become incidents and responding immediately when something looks wrong.

The businesses that survive ransomware attacks are not the ones who got lucky. They are the ones who built layered defenses before the attack came.

How many ransomware attacks happen a day?

Enough to make your coffee go cold before you finish reading this sentence.

According to Cybersecurity Ventures, a ransomware attack occurs every 11 seconds globally. That is not a typo. Every 11 seconds, somewhere in the world, a business has its systems locked and a ransom demand on its screen.

In Canada specifically, the Canadian Centre for Cyber Security reports that ransomware remains the most disruptive form of cybercrime facing Canadian organizations, with attacks increasing in both frequency and sophistication year over year.

The average ransom demand for a mid-sized Canadian business now sits between $150,000 and $500,000 CAD, according to recent incident response data. And that is just the ransom. Add in downtime costs, recovery expenses, regulatory penalties, reputational damage and legal exposure, and the total cost of a single ransomware incident for a 40-person Montreal business can easily exceed $1 million.

For context, a comprehensive managed cybersecurity program from a reputable MSP typically costs a fraction of that — often between $3,000 and $8,000 per month for complete coverage for a business of that size. The math is not complicated.

So what does this mean for your Montreal business?

It means the question is no longer whether you will be targeted. It is whether you will be ready when you are.

Montreal's business community is increasingly attractive to ransomware groups. Your data has value. Your operational dependence on technology creates leverage. And the gap between what most mid-sized businesses have in place and what is actually required to stop a sophisticated attack is wider than most business owners realize.

The good news is that closing that gap does not require a massive budget or an in-house IT army. It requires the right partner — one who has been doing this in Canada long enough to know what works, what does not and what is coming next.

Resitek has been protecting Canadian businesses since 2003. We have seen every version of this threat evolve over more than two decades, and we have helped businesses in Montreal, Toronto and across the country build the defenses they need to survive in today's threat landscape.

We are not here to sell you fear. We are here to give you a plan.

Ready to stop being a soft target?

Book a free consultation with our team and we will walk you through exactly where your business stands and what it would take to close the gaps.

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Sources & references

1. Comparitech — Ransomware attacks by industry 2025 https://www.comparitech.com/news/worldwide-ransomware-roundup-2025-end-of-year-report/ 
2. Canadian Centre for Cyber Security — National Cyber Threat Assessment 2023–2024 https://www.cyber.gc.ca/en/guidance/national-cyber-threat-assessment-2023-2024
3. CISA — Shields Up guidance on phishing https://www.cisa.gov/shields-guidance-families
4. CloudSEK — 2025 Cyber Threat Report: most targeted industries https://www.cloudsek.com/knowledge-base/top-industries-targeted-by-cybercriminals 
5. NIST — Protecting data from ransomware and other data loss events https://www.nccoe.nist.gov/data-security  
6. Cybersecurity Ventures — Ransomware damage report 2025 https://cybersecurityventures.com/ransomware-damage-report/
7. IBM Security — Cost of a Data Breach Report 2023 https://www.ibm.com/reports/data-breach
8. Verizon — Data Breach Investigations Report 2023 https://www.verizon.com/business/resources/reports/dbir/

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