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What to do in a cyberattack? A step-by-step plan for SMEs

13 October 2026 · 5 min read

Hit by a cyberattack? Follow this practical step-by-step plan for SMEs: isolate, call for help, recover and prevent it from happening again.

Max HoltropBy Max Holtrop

A cyberattack does not only happen to large companies. SMEs in particular are a favourite target, because security is often less strict. The question is not only how to prevent an attack, but also: what do you do if it does happen? In this article you read a practical step-by-step plan.

1. Stay calm and isolate the problem

Notice something suspicious, such as encrypted files or a strange login? Disconnect the affected device from the network, but do not simply turn it off. That prevents an attack from spreading, while evidence is preserved.

2. Call for help immediately

Call your IT partner. Speed counts: the sooner someone takes a look, the smaller the damage. Do not try to solve everything yourself, because wrong steps can break more.

3. Change passwords and check access

Change the passwords of affected accounts and check whether unwanted access has been granted. Multi-factor authentication helps to keep attackers out after all.

4. Recover from a backup

With a good, separate backup you restore your files without paying ransom. That is why a reliable backup is not a luxury.

5. Learn from it and prevent a repeat

After an incident you look at what went wrong and close the gap. Often the gain is in the basics: multi-factor authentication, updates and awareness among staff.

Prevention is better than cure

You prevent most attacks with good security and monitoring, so threats are stopped before they cause damage. Schedule a no-obligation consultation and we will look at how well your organisation is prepared.

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Frequently asked questions

Good to know

What should I do first in a cyberattack?

Isolate the affected device from the network, but do not turn it off, and call your IT partner immediately. Speed limits the damage and preserves evidence.

Should I pay ransom for ransomware?

Preferably not. With a good, separate backup you restore your files without paying. Paying also gives no guarantee and sustains the attackers’ business model.

How do I prevent a cyberattack?

With the basics in order: multi-factor authentication, updates, a reliable backup, monitoring and awareness among staff. Together these keep out most attacks.

Questions about this?

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