What is Ransomware?

Ransomware is malicious software that encrypts victim data and demands payment for the decryption key, often spreading rapidly across networks to maximize damage.

What is ransomware?

Ransomware is malware that encrypts files, databases, or entire systems and demands cryptocurrency payment for decryption keys. Modern ransomware operations employ double extortion—encrypting data and threatening public release of stolen information. Ransomware-as-a-service (RaaS) platforms enable affiliates to deploy sophisticated ransomware variants, making attacks accessible to less technically skilled threat actors while operators take payment percentages.

How does ransomware spread?

Ransomware spreads through phishing emails with malicious attachments, exploitation of internet-facing vulnerabilities like VPN and RDP flaws, compromised websites delivering drive-by downloads, and supply chain attacks. After initial access, ransomware operators use legitimate administration tools like PsExec, PowerShell, and Group Policy to move laterally, disable security controls, delete backups, and deploy encryption payloads across entire networks simultaneously.

What is double extortion ransomware?

Double extortion ransomware combines traditional file encryption with data theft and public exposure threats. Before deploying encryption, attackers exfiltrate sensitive data to their infrastructure. Victims face pressure from both operational disruption and threatened publication of stolen data on leak sites. This tactic ensures payment leverage even when organizations can restore from backups, making data loss prevention critical.

How do you prevent ransomware attacks?

Prevent ransomware through multi-layered defense: implement email security with attachment sandboxing, maintain patched and hardened internet-facing services, enforce MFA on all remote access, segment networks to limit lateral movement, deploy EDR with behavioral detection, maintain tested offline backups, restrict administrative tool usage through application whitelisting, and conduct regular tabletop exercises simulating ransomware scenarios.

Should organizations pay ransomware demands?

Most cybersecurity experts and law enforcement agencies advise against paying ransomware demands. Payment funds criminal operations, does not guarantee data recovery or deletion, and marks organizations as willing payers for future targeting. However, each situation requires case-by-case evaluation considering operational impact, backup availability, data sensitivity, and legal obligations. Engage legal counsel and law enforcement before making payment decisions.

What is ransomware-as-a-service?

Ransomware-as-a-service (RaaS) is a criminal business model where ransomware developers provide their malware, infrastructure, and negotiation services to affiliates who conduct the actual attacks. Affiliates receive a percentage of ransom payments, typically 60-80%. This model has dramatically scaled ransomware operations by lowering technical barriers to entry while enabling developers to profit without direct attack involvement.

How do you respond to a ransomware incident?

Respond to ransomware by immediately isolating affected systems to halt encryption spread, preserving forensic evidence including ransom notes and encrypted file samples, notifying leadership and legal counsel, engaging incident response specialists, and reporting to law enforcement. Assess backup integrity for recovery, identify the ransomware variant for potential free decryptors, and begin parallel investigation of initial access vectors and data exfiltration scope.

What backup strategies protect against ransomware?

Implement the 3-2-1 backup strategy: three copies of data on two different media types with one stored offsite. Maintain immutable backups that cannot be modified or deleted, use air-gapped or offline backup storage, test restoration procedures regularly, and ensure backup systems use separate authentication credentials from production. Cloud backups should enable object lock or versioning to prevent ransomware from corrupting backup repositories.