Ransomware in 2025: 7 Myths That Could Put You at Risk

Revisiting the original seven myths

The original 2025 headline is retained at this article’s historical URL. This refreshed edition focuses on practical questions leaders can still use today, rather than treating a past prediction as current incident data. Take these seven assumptions into your next recovery discussion and ask for evidence, not a yes-or-no assurance.

1. A successful backup means we can recover

The Canadian Centre for Cyber Security recommends protected offline backups and recovery testing. A completed backup job does not show that the application, its configuration, and its dependencies will run together. Ask to see a restore that ends with a business owner completing a real task in an isolated test environment.

Source: Canadian Centre for Cyber Security: Ransomware prevention and recovery →

2. Restoring files ends the incident

Recovery also depends on understanding and removing the attacker’s access. Microsoft’s response guidance distinguishes investigation, affected business applications, and compromise recovery. Ask who can explain the entry route and what evidence supports reconnecting systems. An application that starts successfully may still rely on a compromised identity or configuration.

Source: Microsoft Incident Response: Ransomware investigation and recovery →

3. Ransomware only matters when files are encrypted

Data theft can create extortion pressure independently of a file-restoration problem, as the Canadian Cyber Centre describes. Recovery planning should therefore consider which information may have been accessed as well as which systems stopped. Ask whether the team can identify data owners and obtain reliable logs without relying on the affected application.

Source: Canadian Centre for Cyber Security: Ransomware prevention and recovery →

4. The security team can make every decision

An incident can force choices about stopping operations, communicating with customers, and accepting a recovery state. Those choices need business authority. Name the person who can make each decision, a backup when that person is unavailable, and the information they need. Try the contact process when normal email and collaboration tools are unavailable.

5. Our tools will tell us the whole story

Microsoft notes that attackers may disable security services or destroy evidence. Inventory the logs available during an investigation and understand their retention. A practical exercise can reveal whether a responder can reconstruct a change using an independent source when the primary monitoring system is inaccessible. Treat missing evidence as uncertainty, not proof that nothing happened.

Source: Microsoft Incident Response: Ransomware investigation and recovery →

6. Paying would guarantee a clean recovery

The Canadian Cyber Centre warns that ransom payment offers no guarantee of restored access or data deletion. Keep the organization’s response process, specialist support, and required decision-makers available under pressure. A demand is not a recovery plan, and a decryption claim does not resolve questions about stolen information or continued access.

Source: Canadian Centre for Cyber Security: Ransomware prevention and recovery →

7. One tabletop proves we are ready

A discussion can expose unclear ownership, but it cannot demonstrate that a restore works. Combine leadership exercises with authorized technical tests that have clear safeguards. Use a different dependency failure next time: unavailable identity, missing backup credentials, an unreachable supplier, or a recovery copy that fails validation.

End each exercise with a short list of changes, named owners, and a retest. The useful measure is whether a previously uncertain capability now works. Maintain a record of what remains untested so confidence does not grow faster than the evidence.