● Cybersecurity Glossary

What is Ransomware?

Ransomware is malicious software that encrypts files or locks systems and demands payment to restore access. In 2024, Ransomware was present in 44% of all analyzed breaches, with the average cost per incident reaching $5.08 million. This guide covers types, attack vectors, economic impact, and how to build multilayer prevention using NGFW, XDR, ZTNA, and Zero Trust architecture.

Definition and how Ransomware works?

Ransomware is malicious software that encrypts files using strong cryptographic algorithms, rendering them inaccessible, and demands payment in cryptocurrency for the decryption key.

Modern attacks follow a multi-stage process: initial access (phishing, vulnerabilities, stolen credentials), lateral movement to high-value targets, privilege escalation, data exfiltration (stealing data before encryption), encryption across all systems, and the ransom demand with a threat to publish stolen data. This is double extortion the dominant model today.

Types of Ransomware

Attack vectors

Economic impact and statistics

The Ransomware kill chain

Multilayer prevention strategy

Layer 1: perimeter and network security

NGFW with IPS blocks exploits, malicious traffic, and C2 at the network edge. Web filtering prevents phishing sites. SSL inspection reveals threats in encrypted traffic.

Layer 2: detection and response

XDR correlates signals across endpoints, network, cloud, and email to detect lateral movement, data exfiltration, and encryption activity. AI detects novel threats. Automated response isolates devices in seconds.

Layer 3: access control and Zero Trust

ZTNA replaces VPN with application-level access. Microsegmentation isolates network zones. MFA + continuous device verification ensure stolen passwords alone are insufficient.

Layer 4: backup and recovery

Immutable, offline backups stored in isolated environments. Tested regularly. Defined RTOs and RPOs rehearsed, not just documented.

Layer 5: human layer

Security awareness training, phishing simulations, clear reporting procedures. The human layer complements every technical control.

Teldat multilayer Ransomware defense

be.Safe Pro: NGFW at every branch

IPS (15,000+ signatures), web filtering (84 categories), application control (4,000+ decoders), anti-malware, SSL inspection. Embedded in SD-WAN routers with ZTP no separate appliances.

be.Safe XDR: AI-powered detection

Personalized ML models detect lateral movement, data exfiltration, privilege escalation, encryption activity. Automatic network reconfiguration, device isolation, credential revocation, connection blocking containing attacks before encryption.

ZTNA + Zero Trust SD-WAN

ZTNA eliminates exposed VPN gateways. Microsegmentation across all branches prevents Ransomware spread. Each branch is an isolated security zone.

Virtual Patching

When a vulnerability is disclosed before the vendor patch, IPS deploys ad-hoc Virtual Patching signatures to block exploitation at the network level.

Frequently asked questions – FAQ’s

❯ What is Ransomware?

Malicious software that encrypts files and demands payment. Modern variants steal data before encrypting (double extortion).

❯ What are the main types?

Encrypting, locker, double extortion, triple extortion, and RaaS (developers lease tools to affiliates).

❯ How does it spread?

Phishing (16% of breaches), vulnerability exploitation, stolen credentials/RDP, supply chain compromise, drive-by downloads.

❯ How much does it cost?

$5.08M average (IBM 2024). 24 days downtime. $265B projected annual cost by 2031. Healthcare: $7.42M per breach.

❯ How to prevent it?

Multilayer: NGFW + IPS, XDR, ZTNA, microsegmentation, immutable backups, endpoint protection, security training.

❯ Should I pay?

64% refuse. Only 46% who paid recovered data. 80% were attacked again. Invest in prevention and immutable backups instead.