Ransomware Attacks in 2024: The Most Devastating Year Yet?

Ransomware has been around for years, but 2024 took things to a whole new level. Cybercriminals weren’t just targeting big corporations anymore, they went after hospitals, financial institutions, and even government agencies. Attackers used more advanced encryption, applied ruthless extortion tactics, and hit industries that were least prepared for disruption.

But why was 2024 particularly challenging? And what can we learn from it to prepare for the future? Let’s break it all down.

Why 2024 Was a Particularly Severe Year for Ransomware

We’ve seen a noticeable shift. It’s not just the sheer volume of attacks but the sophistication and audacity of the perpetrators. Think back a few years, and ransomware was often about encrypting files and demanding a payout. Now, it’s a multi-layered extortion game, where data exfiltration and public shaming are just as damaging as the encryption itself.

Analyzing ransomware statistics reveals a clear trend of increased financial losses and operational disruptions across various sectors.

We’re seeing a rise in “triple extortion” tactics. It’s not enough to encrypt your data and threaten to leak it. Now, attackers are going after your customers and partners, too. They’re disrupting supply chains and causing chaos beyond the initial victim.

Now, we’re witnessing a convergence of advanced techniques, including AI-powered attacks and increasingly targeted assaults on critical infrastructure. It’s not just about locking up your files anymore. The intent is to paralyze your operational capabilities and severely undermine your credibility.

Healthcare, finance, critical infrastructure, and retail have been prime targets. Hospitals are particularly vulnerable, with attacks disrupting patient care and jeopardizing lives. Financial institutions face data breaches and the potential for systemic disruption. And when critical infrastructure gets hit, we all feel the consequences.

• More sophisticated attacks – Threat actors deployed AI-driven malware, making detection and prevention much harder.
• Higher ransom demands – The average ransomware demand skyrocketed, with some companies forking over tens of millions just to regain access to their data.
• Increased targeting of critical industries – Healthcare, finance, and public infrastructure faced more attacks than ever, putting millions of lives and businesses at risk.
• Evolving extortion techniques – Double and even triple extortion became common, where attackers not only encrypted data but also threatened to leak sensitive information or launch follow-up attacks.

Largest Ransomware Attacks of 2024

An analysis of the latest ransomware attacks in 2024 shows that ransomware variants are becoming increasingly difficult to detect and mitigate. Last year saw some of the most disruptive ransomware attacks in recent history. Here are a few that made headlines:

• UnitedHealth ($3.09 billion loss) – One of the most expensive ransomware incidents ever recorded, affecting healthcare operations nationwide.
• Panera Bread (week-long outage) – A cyberattack shut down Panera’s ordering systems, causing major financial and reputational damage.
• CDK Global ($50 million ransom demand) – A software provider for car dealerships was brought to a standstill, affecting thousands of businesses.

In 2024, several ransomware groups made a name for themselves with high-profile attacks that shook entire industries.

Ransomware attacks continue to evolve beyond encryption for ransom demands, with attackers increasingly turning to data theft and extortion tactics.

Often, threat actors are sidestepping encryption altogether, focusing on stealing sensitive data and extorting organizations with the threat of publicly releasing it which is often a stronger pressure point than denying access to the data via encryption.

Let’s take a closer look at the worst offenders.

RansomHub – Next-Level Encryption Tactics

RansomHub, launched in February 2024, has quickly become a major ransomware threat, claiming over 500 attacks. Believed to be the successor to the disrupted ALPHV, it operates as a Ransomware-as-a-Service (RaaS) with strict affiliate rules and a 90/10 ransom split.

While claiming to be global, it avoids targeting Russian-affiliated countries, suggesting Russian origins. Despite a low victim payment rate (around 11%), RansomHub focuses on high-volume attacks and affiliate growth to generate long-term revenue.

8Base Ransomware – Ruthless Targeting of SMBs

Unlike other groups that went after high-profile corporations, 8Base targeted small and mid-sized businesses (SMBs). They focused on double extortion tactics, encrypting data, and threatening to leak sensitive customer information if the ransom wasn’t paid. This approach left many businesses in a challenging position, balancing financial loss against reputational damage.

HUNTERS INTERNATIONAL – Aggressive Tactics on the Rise

Hunters International, who first appeared in late 2023, is a ransomware group utilizing code from the defunct Hive operation, which extorted over $100 million. Security researchers traced the code transfer after the FBI disrupted Hive.

Hunters International has since attacked organizations in roughly 30 countries, targeting vulnerabilities rather than specific locations, with the U.S. being the most affected. They primarily use social engineering, phishing, and Remote Desktop Protocol (RDP) to gain access to victim systems.

Other Major Ransomware Groups

Several other groups remained highly active in 2024:

• Akira, Bianlian, Medusa – Known for targeting critical infrastructure and healthcare, causing significant disruptions. Akira is known for its speed, Bianlian for its stealth, and Medusa for its relentless pursuit of high-value targets.
• Clop Ransomware – Still a threat after its infamous MOVEit attacks in 2023, this group continued exploiting zero-day vulnerabilities.
• Funksec, Abyss, Lynx, Qilin, Lockbit, Play – A mix of old and new ransomware groups that wreaked havoc on various sectors.

Industry-Specific Ransomware Threats

Ransomware is a precision instrument wielded against the very pillars of our society. Let’s look at how specific industries have been affected.

Healthcare: Beyond Data Theft, a Breach of Trust and Human Life

The healthcare sector is experiencing a significant surge in ransomware attacks, characterized by the exfiltration of sensitive patient health information (PHI) and the disruption of critical operational workflows.

Beyond the immediate data breach, these incidents substantially threaten patient safety, treatment efficacy, and institutional trust. Mitigating these risks requires a multi-layered security strategy encompassing robust data encryption, incident response planning, and proactive vulnerability management.

Financial Sector: Economic Impact

Ransomware operators see financial institutions as high-yield targets due to the potential for substantial financial gain and the sector’s vulnerability to widespread disruption. Attacks can lead to significant financial losses, damage to reputation, and a loss of public trust. The interconnected nature of finance means these attacks can trigger a domino effect, impacting the entire economy.

Critical Infrastructure: Disrupting Essential Services

Ransomware attacks targeting critical infrastructure, including utilities, transportation, and government entities, pose a direct threat to national security and public safety. These attacks can disrupt essential services, compromise operational technology (OT) systems, and create cascading effects that impact critical societal functions.

Addressing these threats requires a comprehensive security framework, incorporating robust network segmentation, intrusion detection systems, and collaborative information sharing with relevant agencies.

Retail & Ecommerce: Targeting Supply Chains

Ransomware attacks represent a significant threat to the retail and e-commerce sector, with the potential to severely damage customer trust. Beyond the financial and operational impact, these incidents can destroy the foundation of customer loyalty.

Companies need robust security measures, including supply chain protection and PCI compliance, coupled with a strong emphasis on cultivating a security-conscious culture.

Key Ransomware Trends in 2024

The Rise of Ransomware-as-a-Service (RaaS)

Cybercriminals aren’t even writing their own ransomware anymore—they’re renting it,  lowering the barrier to entry for cybercriminals. RaaS allows hackers to purchase ransomware kits, making attacks more widespread and sophisticated.

Double and Triple Extortion Tactics

Attackers are encrypting data, exfiltrating it, and threatening to publicly disclose it. They’re also targeting customers and partners, amplifying the impact of their attacks.

Now attackers:

• Demand a ransom for decryption.
• Threaten to leak sensitive information if the ransom isn’t paid.
• Launch follow-up DDoS attacks on victims.

AI-Powered Ransomware

Cybercriminals are using AI to automate attacks, making them more efficient and harder to detect. AI-driven ransomware can adjust encryption techniques on the fly, evading traditional security solutions.

Targeted Attacks on Critical Infrastructure and Supply Chains

Attacks are moving beyond traditional targets. Now, transportation, water supplies, and energy grids are all at risk. These attacks can have far-reaching consequences, disrupting essential services and causing widespread economic damage.

How Organizations Can Defend Against Ransomware in 2025

To counter the rising tide of sophisticated ransomware, businesses need to move beyond traditional security and embrace a proactive approach to building resilience. Here’s how.

Best Cybersecurity Practices for Preventing Ransomware

Prevention is always better than recovery. Organizations should focus on:

• Regular backups – Keep offline, encrypted backups of critical data. Cloud backups alone aren’t enough—attackers often target them, too.
• Patch and update everything – Unpatched software is a goldmine for attackers. Regular updates eliminate known vulnerabilities.
• Multi-factor authentication (MFA) – Many ransomware attacks start with stolen credentials. Enforcing MFA makes unauthorized access much harder.
• Network segmentation – Isolate critical systems so attackers can’t spread laterally, even if one part of the network is compromised.
• Email security – Since most ransomware enters through phishing, implement AI-driven email filtering and train employees to spot malicious messages.

AI-Driven Security Solutions: The Future of Cyber Defense

Since cybercriminals use AI to enhance ransomware, organizations must fight fire with fire. These solutions can analyze vast amounts of data to identify anomalies and patterns indicating a ransomware attack. AI-powered security tools can:

• Detect anomalies faster – AI identifies suspicious behavior in near-real time.
• Predict attacks before they happen – AI-driven models can flag high-risk activity before a breach occurs.
• Automate response measures – Some AI-driven platforms isolate infected devices immediately, stopping ransomware in its tracks.

Zero Trust Architecture

A Zero Trust approach assumes that no user or device is inherently trustworthy, requiring continuous verification and authentication. It operates on a simple principle: “Never trust, always verify.”

Key components of a zero-trust security model include:

• Least privilege access – Employees get access only to what they need, nothing more.
• Continuous authentication – Systems verify users and devices at every access point.
• Micro-segmentation – Even if attackers breach one system, they can’t move freely within the network.

Major companies are already implementing Zero Trust to block ransomware attacks before they happen. If your organization isn’t on board yet, now’s the time.

Employee Training and Awareness

Most ransomware infections start with human error—phishing emails, weak passwords, or social engineering. Even the best security tools can’t fix poor cybersecurity habits.

How to Build a Cyber-Aware Culture

• Regular training sessions – Teach employees how to identify phishing attempts and suspicious activity.
• Simulated phishing attacks – Conduct internal phishing tests to see who falls for fake scams.
• Password hygiene – Encourage longer, unique passwords and use password managers.
• Clear incident reporting – Employees should know exactly what to do if they suspect an attack.

Steps to Take After a Ransomware Attack

Even with strong defenses, incidents can still happen. Here’s what organizations should do immediately:

Step 1: Isolate the Infection

• Disconnect infected devices from the network to prevent ransomware from spreading.
• Shut down affected systems until forensic teams investigate.

Step 2: Assess the Damage

• Identify which systems are affected and what data is encrypted.
• Check if backups are intact and ready for recovery.

Step 3: Contact Incident Response Teams

• Alert cybersecurity teams and law enforcement if necessary.
• Engage a ransomware negotiation expert (if considering payment).

Step 4: Restore Systems Securely

• Use clean backups to restore encrypted files.
• Rebuild affected systems from scratch if necessary.

Step 5: Conduct a Post-Incident Review

• Analyze how the attack happened and what security gaps need fixing.
• Update security protocols to prevent future attacks.

2024’s Lessons for 2025’s Security

Looking back, 2024 was the worst year yet for ransomware. The sophistication and frequency of attacks have increased, highlighting the need for organizations to adopt more robust cybersecurity measures.

Key takeaways

• In 2024, ransomware attacks increased, with record-breaking financial losses.
• A close examination of recent ransomware incidents shows a marked increase in the use of double and triple extortion tactics.
• Cybercriminals used AI, RaaS, and new extortion tactics to maximize damage.
• Healthcare, finance, and critical infrastructure suffered the most.
• Law enforcement made progress, but new ransomware gangs kept emerging.
• Proactive defense and employee training are essential.
• Regularly back up data and test recovery processes.
• Zero Trust, AI-driven security, and cyber resilience are the best defenses for 2025.

The key to improving cybersecurity resilience lies in adopting a proactive, layered approach to security. Organizations must invest in advanced security technologies, implement robust security policies, and foster a culture of security awareness.

The impacts of ransomware in 2024 should serve as a wake-up call for organizations to prioritize cybersecurity investments. Need help with protecting your organization? Act now and contact our experts for more information.