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Essential strategies for preventing ransomware attacks, from network segmentation to backup testing and employee training.
Ransomware continues to be one of the most devastating cyber threats facing organisations. The average cost of a ransomware incident in the UK now stands at £4.72 million when you factor in downtime, remediation, legal fees, and reputational damage (IBM Cost of a Data Breach Report, 2025). And the threat is accelerating — ransomware was present in 44% of all confirmed breaches, a 37% year-on-year increase (Verizon 2025 DBIR), with SMBs increasingly targeted.
The good news: ransomware is highly preventable. With the right combination of technical controls, employee training, and incident response planning, you can dramatically reduce your risk. Here’s our practical, engineer-led approach to ransomware prevention.
Most ransomware enters organisations through three primary channels:
Email is the number one attack vector, so it deserves the most attention:
Unpatched vulnerabilities are the third most common entry point. Our approach:
Traditional antivirus is no longer sufficient. Modern ransomware evades signature-based detection using polymorphic code and fileless techniques. We deploy enterprise EDR solutions that use behavioural analysis and AI to detect ransomware at every stage of the attack chain:
If ransomware does get in, network segmentation limits how far it can spread. We implement:
Your backup strategy is your last line of defence. If prevention and detection fail, tested, immutable backups can mean the difference between a minor incident and a catastrophe.
Immutability is the critical addition to the traditional 3-2-1 rule. Sophisticated ransomware actively targets backup systems — deleting shadow copies, encrypting backup files, and corrupting recovery points. Immutable backups stored with cloud backup services featuring retention locks cannot be tampered with.
A backup you haven’t tested is a backup that doesn’t work. We schedule quarterly recovery drills that verify:
When (not if) a ransomware incident occurs, a well-practised incident response plan reduces chaos and accelerates recovery. Your plan should include:
Our position is clear: do not pay. Paying does not guarantee recovery (fewer than half of paying organisations recover all their data (Sophos State of Ransomware, 2025)), it funds criminal operations, and it marks you as a willing payer for future attacks. With proper prevention, detection, and backup strategies, paying should never be necessary.
We offer a free ransomware readiness assessment that evaluates your email security, endpoint protection, backup strategy, and incident response plan. We’ll identify your most critical gaps and provide a prioritised remediation plan. No sales pitch — just an honest engineering assessment of your risk.
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Our engineers are available for a free consultation. No sales pitch — just an honest technical conversation.