Ransomware: How One in Two SMBs Gets Hacked (And How to Avoid It)0%
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    Security·23 Juin 2026

    Ransomware: How One in Two SMBs Gets Hacked (And How to Avoid It)

    By Helion Cloud Team

    In 2026, SMBs are the main target of cyberattacks. A ransomware attack costs a small business an average of €80,000. Here's how to protect yourself with tools included in Microsoft 365.

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    One morning you arrive at the office and your computer displays a message: 'Your files have been encrypted. Pay €15,000 in Bitcoin to get them back.' This scenario affects 1 in 2 SMBs according to ANSSI. The good news: 90% of these attacks are preventable with the right tools.

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    How a ransomware attack really works

    It usually starts with an email that looks legitimate: an invoice, a DHL parcel, an HR document. One click on the link or attachment silently installs malware. For days or even weeks, the software maps your network before encrypting all your files at once: accounting, quotes, product photos, customer records. SMBs are targeted because they often pay the ransom due to lack of backups.
    02

    Why SMBs are particularly vulnerable

    No IT director, no dedicated security budget, simple passwords reused everywhere, backups on an external hard drive permanently plugged in (which the ransomware also encrypts). Cybercriminals know this and specifically target companies with 5 to 100 employees: big enough to pay, too small to defend themselves. In France, the average cost of an attack for an SMB is €80,000 (ransom + business interruption + recovery).
    03

    Protection included in Microsoft 365 Business Premium

    Microsoft Defender for Business (included in Business Premium, €22/month/user) monitors every device in real time. It detects abnormal behavior BEFORE encryption begins. Microsoft Defender for Office 365 analyses every attachment in an isolated environment ('sandbox') before you receive it. With OneDrive, your files have a 93-day history: if attacked, restore everything in 2 clicks. Together these replace security solutions that would cost 5 to 10 times more separately.
    04

    5 actions that protect your SMB starting today

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    Summary

    Helion Cloud offers a free 15-minute security audit to assess your cyber risk exposure. We then deploy Microsoft Defender for Business to protect your SMB without mobilising your team. Based in Lille, we operate throughout France.

    Need support

    Our team of experts based in Lille supports companies across France, Belgium and Europe. Available Monday to Friday.