Ransomware Prevention & Incident Response
Ransomware is the most financially damaging threat facing businesses today. Here is how attacks work, how to prevent them, and how penetration testing closes the gaps attackers exploit.
Ransomware attacks cost businesses an average of $140,000 per incident in 2025 — and that figure does not account for downtime, reputational damage, or regulatory penalties. The vast majority of successful ransomware attacks exploit vulnerabilities that independent penetration testing would have found. This guide covers how modern ransomware works, the specific weaknesses attackers exploit, and the concrete steps organizations can take to reduce their exposure.
Why Ransomware Remains the Top Threat
Ransomware has dominated the cybersecurity threat landscape for years and shows no signs of abating. In 2025, ransomware was linked to 75% of all system intrusion breaches, attacks increased by 57.5% compared to the prior year, and the average breach cost for small and mid-sized businesses reached $140,000. The ecosystem has professionalized: ransomware-as-a-service (RaaS) platforms allow even technically unsophisticated criminals to deploy sophisticated attacks, and double extortion — encrypting data and threatening to publish it — has become standard.
The Connection Between Pentesting and Ransomware Prevention
The entry points ransomware uses are well-documented: unpatched external vulnerabilities, credential theft via phishing, weak or absent MFA, exposed RDP, and lateral movement enabled by poor network segmentation. Every one of these is something a penetration test specifically looks for. Organizations that conduct annual penetration testing and remediate findings have measurably better outcomes against ransomware than those that don't.
What's in This Guide
- How ransomware attacks work — the anatomy of a modern attack from initial access to ransom demand
- How penetration testing prevents ransomware — the specific connection between testing and resilience
- Common entry points ransomware exploits — and how to close them
- What happens after a ransomware attack — the recovery process and what it costs
- How to build a ransomware response plan
- Backup strategy for ransomware protection
- Business Email Compromise (BEC) — how it works and how to test for it
- What is a tabletop exercise — and do you need one
- Should you pay the ransom?