Cybersecurity — Ransomware

Ransomware: How the Attack Works and How to Protect Your Business

When ransomware strikes, the ransom is not the most expensive part. The most expensive part is the time your business is standing still.

April 2026 6 min read IT Doctors
Home / Cybersecurity NIS2 / Ransomware Protection

Ransomware encrypts your files, halts operations, and forces you to make decisions at the worst possible moment. The difference between an inconvenience and a disaster is almost always preparation.

317%rise in ransomware attacks against small businesses
22 daysaverage business disruption after a successful hit
60%of small businesses never fully recover

How Ransomware Gets Into Your Environment

Phishing Email

A single click on a link or attachment is enough for an initial breach.

Unprotected RDP

Weak passwords and direct internet-facing access are a classic entry point.

Unpatched Software

Old versions of Windows, servers, and applications offer ready-made vulnerabilities.

The Most Dangerous Misconception

Ransomware does not only hit large companies. Automated scans search for any vulnerable business — whether you are a law firm, hotel, warehouse, or shop.

How a Typical Attack Unfolds

1
Intrusion

Malicious code enters via email, RDP, or a software vulnerability.

2
Silent Spread

The attacker explores shared drives, accessible servers, and important files.

3
Encryption

Files become inaccessible almost simultaneously and work comes to a halt.

4
Ransom Demand

A payment instruction appears with a deadline designed to amplify panic.

Five Measures That Provide the Most Protection

1. Tested Backup

A backup that has never been tested and is not isolated is not real protection. The strongest protection is one you can actually restore in a real situation.

2. Employee Training

Phishing remains the leading entry point for ransomware. Short, regular training sessions significantly reduce the risk.

3. MFA for Critical Accounts

For email, VPN, cloud services, and administrative access.

4. Patch Management

Many successful attacks exploit already-known vulnerabilities for which patches already exist.

5. Control Over External Access

RDP behind a VPN, restricted by IP, with strong passwords and MFA — or disabled entirely if it is not needed.

If You Have Already Been Hit

Isolate affected machines from the network immediately. Do not pay in panic. First stop the spread, then assess the scope and your backup options.

The Cost of Being Unprepared

Cost ItemIndicative Range
Ransom payment5,000 — 50,000 BGN
Business downtime10,000 — 80,000 BGN
System recovery3,000 — 20,000 BGN
Legal and reputational damages2,000 — 15,000 BGN
Prevention per year600 — 3,000 BGN
The Takeaway

Ransomware is a question of preparation, not luck. A solid backup, restricted access, and trained people make the difference between a quick recovery and a severe breakdown.

Frequently Asked Questions

How does ransomware most commonly get in?

The most common entry points are a phishing email, an unprotected RDP connection, or unpatched software that provides easy access to the environment.

Which measures reduce the risk most?

The most important ones are a solid backup, restricted access rights, MFA, software updates, and employee training against phishing.

Not Sure Whether You Are Protected?

IT Doctors performs an initial review of your backup, access controls, and key ransomware risks in your environment.

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