Ransomware Attacks Surge in Q1 2025 as Immutable Backup Emerges as Critical Defense

Ransomware attacks have seen a dramatic rise in the first quarter of 2025, with new research from Object First revealing an 84% increase compared to the same period in 2024. This alarming trend highlights the growing sophistication and frequency of ransomware campaigns, with nearly two-thirds of organizations reporting at least one attack in the past two years. 

The findings suggest that ransomware is no longer a matter of “if” but “when” for most businesses. Despite the increased threat, Object First’s study offers a silver lining. A large majority—81% of IT decision-makers—now recognize that immutable backup storage is the most effective defense against ransomware. Immutable storage ensures that once data is written, it cannot be changed or deleted, offering a critical safety net when other security measures fail. This form of storage plays a key role in enabling organizations to recover their data without yielding to ransom demands. 

However, the report also highlights a concerning gap between awareness and action. While most IT professionals acknowledge the benefits of immutable backups, only 59% of organizations have actually implemented such storage. Additionally, just 58% maintain multiple copies of their data in separate locations, falling short of the recommended 3-2-1 backup strategy. This gap leaves many companies dangerously exposed. The report also shows that ransomware actors are evolving their methods. A staggering 96% of organizations that experienced ransomware attacks in the last two years had their backup systems targeted at least once. Even more concerning, 10% of them had their backup storage compromised in every incident. 

These findings demonstrate how attackers now routinely seek to destroy recovery options, increasing pressure on victims to pay ransoms. Many businesses still place heavy reliance on traditional IT security hardening. In fact, 61% of respondents believe this approach is sufficient. But ransomware attackers are adept at bypassing such defenses using phishing emails, stolen credentials, and remote access tools. That’s why Object First recommends adopting a “breach mentality”—an approach that assumes an eventual breach and focuses on limiting damage. 

A Zero Trust architecture, paired with immutable backup, is essential. Organizations are urged to segment networks, restrict user access to essential data only, and implement multi-factor authentication. As cloud services grow, many companies are also turning to immutable cloud storage for flexible, scalable protection. Together, these steps offer a stronger, more resilient defense against today’s aggressive ransomware landscape.