Ransomware is a type of malware that encrypts company files and demands a payment (ransom) to recover them. In recent years, attacks have multiplied and SMEs are the main target — precisely because they often lack adequate security measures.
How does it enter?
- Phishing emails: malicious attachments or links that appear legitimate
- Vulnerable RDP: Remote Desktop Protocol exposed without protection
- Unpatched software: known vulnerabilities that were not fixed in time
- Infected USB drives or storage devices
What happens after infection?
- The malware silently spreads through the network
- It encrypts critical files (documents, databases, backups)
- It shows a ransom demand, usually in cryptocurrency
- If you pay, there is no guarantee of recovery
How to protect yourself?
1. Reliable and tested backups
The most important defense. Offline copies (disconnected from the network) that are regularly verified to work.
2. Endpoint security
Modern antivirus with behavioral detection, not just signatures.
3. Patch all software
Operating systems, browsers, Office, firmware. Every unpatched vulnerability is an open door.
4. Restrict access
Principle of least privilege: each user only accesses what they need.
5. Security awareness training
Most attacks start with a click. Training your team is the cheapest investment.
At Zelarus we help companies implement layered security strategies to minimize the risk of ransomware attacks and ensure rapid recovery if one occurs.