Skip to content
ADN-TI — Solutions sur mesure
CybersecurityBackupMicrosoft 365

Ransomware: how an SMB can actually protect itself

·The ADN-TI team

Cybersecurity analyst at work across several screens

People often picture ransomware as a big-company problem. The reality is the opposite: SMBs are the favorite targets, precisely because they’re less protected. An attack encrypts your files, paralyzes your operations, and you’re asked for a ransom to get your data back — with no guarantee.

The good news: a handful of measures, neither complicated nor expensive, dramatically reduce the risk.

Before: close the entry points

The vast majority of attacks start with a booby-trapped email or a stolen password. So that’s where we act first:

  • Multi-factor authentication (MFA) everywhere. The most cost-effective control: even with your password, a fraudster stays locked out. We explain why here.
  • Phishing awareness. Your employees are the front line — a short quiz and regular reminders change reflexes.
  • Automatic updates of systems and software: we don’t leave known vulnerabilities lying around.
  • Modern device protection (EDR), like Microsoft Defender, which detects suspicious behavior instead of relying on a simple virus list.

During: limit the damage

If an attack gets through anyway, the goal is to keep it from spreading everywhere:

  • Separate, limited admin accounts: a stolen identity must not hand over the keys to the kingdom.
  • Segmentation and Zero Trust access: each user reaches only what they need.
  • Managed detection and response (MDR): a watchtower that isolates a compromised device before the encryption spreads.

After: your real insurance is backup

This is the decisive point. If your backups are recent, tested and out of attackers’ reach, you restore and carry on — without paying.

  • Follow the 3-2-1 rule: 3 copies, 2 media, 1 off-site. (Our dedicated article shows how.)
  • Favor immutable backups (which ransomware can neither encrypt nor delete).
  • Test the restore: a backup never restored is a bet, not a protection.

And should you pay the ransom?

No, except in extreme cases and as a last resort. Paying guarantees nothing (often the data doesn’t come back, or only partly), funds crime, and makes you a repeat target. The best answer is to be able to restore without them.

Bottom line: against ransomware there’s no silver bullet, but a simple chain — MFA + awareness + EDR + tested backups. Each link is affordable, and together they turn a potential disaster into a mere incident. We can assess your posture in 2 minutes with our cybersecurity self-assessment.

Ready when you are

Ready to take control of your IT?

Book a free 30-minute discovery call. No commitment, no jargon.