Ransomware

What Is Ransomware?

Ransomware is a type of malicious software that encrypts an organization’s data, locking users out of their own files and systems, and demands a ransom payment in exchange for restoring access. It is one of the most damaging and widespread cyber threats facing businesses today.

How It Works

A ransomware attack usually begins when malware enters a network, often through a phishing email, a malicious link, or an unpatched vulnerability. Once inside, it spreads across systems and encrypts files, making them completely unusable. Victims then see a ransom note demanding payment, typically in cryptocurrency, in return for the decryption key.

Modern ransomware has grown more aggressive through a tactic called double extortion. Before encrypting the data, attackers first steal a copy of it. They then threaten to leak the stolen information publicly unless the ransom is paid, adding a second layer of pressure even on victims who have backups. This means a strong backup alone no longer fully protects against the reputational and legal fallout of an attack.

Why It Matters

Ransomware can halt an organization instantly. A clinic loses access to patient records, a nonprofit cannot reach its donor database, and operations grind to a stop. The costs extend far beyond any ransom, including downtime, recovery expenses, lost business, and potential regulatory penalties if sensitive data was exposed. For a small organization, a single attack can be financially devastating.

Small clinics, nonprofits, and firms are frequent targets precisely because attackers expect weaker defenses. The good news is that ransomware is highly preventable. Strong backups, staff training, multi-factor authentication, and timely patching dramatically reduce both the likelihood of an attack and the damage it can cause, turning a potential catastrophe into a recoverable event.

Related Terms

• Malware
• Phishing
• Backup and Disaster Recovery (BDR)
• Incident Response