Malware vs Ransomware: What BC Businesses Should Know

What malware is

Malware means malicious software: anything designed to run on your systems without your consent and to harm you or benefit an attacker. That includes viruses, worms, spyware, information stealers, cryptominers, and droppers that install other tools. Many malware strains try to stay quiet: they log keystrokes, dump browser credentials, or sit on a server until a human operator sells access.

For a typical BC office, malware often arrives through a malicious attachment, a cracked application, a compromised website, or stolen remote access. Under PIPEDA and BC PIPA, if malware leads to unauthorized access to personal information, you may have notification and reporting obligations depending on the circumstances. That is one reason insurers and privacy officers ask for logging, EDR (endpoint detection and response), and backup testing, not just antivirus.

What ransomware is

Ransomware is malware with a particular goal: to deny you access to data or systems until a ransom is paid, or to steal sensitive files and threaten publication (double extortion). Modern ransomware often combines encryption, data exfiltration, and harassment of customers or partners copied from your inbox.

The business impact is not only the ransom. Downtime, forensic costs, legal review, credit monitoring for affected individuals, and reputational damage routinely exceed the Bitcoin demand. Canadian public- and private-sector breach reporting rules can also apply when personal information is involved.

How organisations in the Lower Mainland get hit

• Phishing: Staff approve a fake Microsoft 365 login or open a document that enables macros. Phishing is a fake email or message designed to trick staff into giving away passwords or money.
• Unpatched edge devices or VPNs: Public-facing gear that misses updates becomes an entry point.
• Reused or weak admin passwords: Especially on RDP or legacy application servers.
• Third parties: A vendor with access to your network brings in malware through their own compromise.

Defences that address both

You do not build two separate security programs. The same foundation reduces risk across malware types:

• Patching and lifecycle management for operating systems, firmware, and critical apps. Patching means security updates are installed every month and urgent ones as soon as they are released, closing the weaknesses attackers use most.
• Phishing-resistant identity: phishing-resistant MFA (multi-factor authentication) where possible, conditional access, and no shared global admin accounts. Multi-factor authentication (MFA) adds a second step at sign-in, so a stolen password alone cannot open a staff account. Conditional Access policies decide who can sign in, from which devices and locations, which keeps stolen passwords and unmanaged devices away from company data.
• Endpoint protection that scales to EDR (endpoint detection and response) or MDR (managed detection and response) so behaviour is watched, not just file hashes. With managed detection and response (MDR), security analysts watch alerts 24/7 and respond, so an attack at night is contained before the next business day.
• Backups that are tested, immutable or offline where appropriate, and monitored for tampering. Immutable backups are copies of your data that ransomware cannot alter or delete, so the organization can recover instead of paying a ransom.
• Email and web filtering to stop payloads before they execute.
• Written incident basics: who to call, how to preserve logs, and how to triage without tipping off the attacker.

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