Organizations collect, process, and store enormous amounts of sensitive information, including personal data, financial records, intellectual property, and more.
But the threat to that data is escalating fast. Ransomware attacks rose 32% last year, and in 89% of attacks, the backup repository itself is a target.
Keep reading to learn why storage security needs to be a high priority, the threats shaping 2026, and the best practices that hold up under pressure.
Why Is Data Storage Security Important?
Data storage security involves safeguarding storage systems and the sensitive data they hold, whether that’s on-site, in remote data centers, or in the cloud.
A failure in storage security risks exposing business-critical data. Even if you’re able to recover the lost files, a storage security failure can mean regulatory fines under frameworks like GDPR, HIPAA, or CCPA, loss of customer trust, and weeks or months of operational disruption.
Here’s a quick example. In January 2026, an extortion group claimed to have stolen 1.4TB of internal data from Nike, nearly 189,000 files spanning product designs, manufacturing workflows, factory audits, and supply chain documentation. They didn’t bother encrypting anything. They simply took the data and threatened to leak it. No backup strategy in the world can undo that kind of exposure.
The Evolving Threats to Storage Security
The threat landscape has shifted significantly. Attackers are going after your data and after your ability to recover it.
Ransomware Is Targeting Backups First
These days, attackers actively target backup and recovery systems because they know that an organization’s ability to restore from backup is the one thing standing between them and a payout. So they’re eliminating that option before they ever deploy a payload.
As AJ Thompson, Chief Commercial Officer at IT consultancy Northdoor and member of IBM’s Worldwide Security Advisory Council, explains: “Attackers know exactly where organisations’ safety nets are. They go there first.”
Insider Threats
Not all threats come from outside. Insider threats, such as disgruntled employees, compromised credentials, or former staff with lingering access, or even well-meaning team members who fall for a sophisticated social engineering attack. Any of these can expose sensitive data or give attackers the foothold they need.
In early 2026, NYC-based ad tech firm Optimizely was breached after attackers called employees posing as IT support, convincing staff to enter their credentials and MFA codes on fake login pages. The hackers walked away with access to internal systems and CRM data.
This serves as a reminder that human vulnerabilities are often the entry point, and that even security-conscious organizations can be caught off guard.
Advanced Persistent Threats (APTs)
Advanced Persistent Threats (APTs) are long-term intrusions that often go undetected for weeks or months. Attackers gain access, escalate privileges, and quietly map out the environment before striking.
Martin Summerhayes, a managed services and consulting executive at Northdoor, described a case he dealt with: “A mid-sized manufacturer believed it was reasonably well protected because they had backups, endpoint controls, and some network segmentation. But attackers gained domain admin access, removed recent restore points, and damaged the backup catalogue before deploying ransomware. Older tape backups existed, but rebuilding from them was slow and manual. Production was severely disrupted for an extended period, affecting customers, supply chain commitments, and regulatory obligations.
AI-Powered Attacks Are Compressing the Timeline
The window for catching attackers before serious damage is done is shrinking.
“Previously, skilled operators spent days manually mapping a target’s backup infrastructure. Now that entire process can be automated and finished within hours,” explains Drew Miles, CISA and cybersecurity expert. The next evolution, he warns, is adaptive payloads that modify their behavior based on the recovery infrastructure they detect.
Best Practices for Storage Security
Effective management of storage security should go beyond a tactical level and include an organizational and strategic perspective. This includes adopting a multi-layered security approach to address the various threats to storage security such as endpoint security, network security, and robust backups for downtime prevention.
Overall, as you work to develop and implement your storage security strategy, prioritize the following:
Maintaining complete visibility
Do you know who has access to what? Data access transparencyis crucial. This includes understanding where your data is stored, how it’s used, who has access to it, and what vulnerabilities may exist in your storage infrastructure. You’ll usually want to enforce the Principle of Least Privilege (PoLP) (limit user access rights to the minimum necessary for their job functions), but you can only do that if you have transparency first.
Involve Key Stakeholders
Effective storage security is a cross-functional effort so make sure you’re involving key stakeholders from different departments, like developers, legal, HR, and operations. This will help you identify potential challenges with implementation while maintaining strong relationships that will help enforce your policies and processes.
Train Your Staff
Continually educate and train your staff on security best practices and the latest threats. This is crucial to mitigate the risk of insider threats and to reinforce the human element of your security posture.
Conduct Regular Audits and Penetration Testing
Regularly auditing your storage environments and conducting penetration testing are critical to uncovering vulnerabilities and security gaps. These practices help ensure your defenses are always up to date against emerging threats.
Adopt a Multi-Layered Approach
Effective storage security doesn’t stop at prevention. Consider it in its full spectrum, from ransomware detection and monitoring to response and recovery and work from there. This will help guide you to finding the right tools and prioritizing the right systems to plug in any identified gaps.
Avoid Complacency
Your storage security is a continuous process. Implementing a strategy once and never revisiting it is an easy way to succumb to new attacks and leave new areas of your organization unsecured. Avoid complacency and have a process that will reassess your current strategy.
Tools for Storage Security
Effective storage security requires not only robust policies and processes but also the right set of tools. These tools help manage internal and external threats, enforce security protocols, and mitigate risks. Here’s a list of essential tools that you should consider integrating into their security strategy:
- Firewalls and Intrusion Detection Systems (IDS) protect the network perimeter, monitor incoming and outgoing network traffic, and can block suspicious activity based on predefined security rules.
- Data Encryption Tools encrypting data at rest and in transit, ensuring that sensitive information is unreadable to unauthorized users.
- Identity and Access Management (IAM) Tools control access to resources, ensuring only authorized users can access certain data or systems, based on their roles and privileges.
- Security Information and Event Management (SIEM) Tools analyze security alerts and help cybersecurity teams detect and respond to anomalies.
- Threat Detection: DataDefense by ProLion monitors your storage for signs of suspicious behavior and blocks attacks instantly. By detecting and preventing ransomware attacks in real-time at the storage level, DataDefense acts as a last line of defense, ensuring comprehensive protection for your organization’s data.
By leveraging these tools, organizations can enhance their storage security and better protect themselves against cyber threats. Each tool plays a specific role in a multi-layered defense strategy that can significantly reduce the risk of data breaches and other cyber incidents.
Take Your Storage Security to the Next Level
Don’t wait for a breach. The time to safeguard your organization’s valuable data is now.
Want to learn more about how ProLion’s DataDefense protects your storage system against attacks? Watch the on-demand demo or or check out our free guide to ransomware protection for security professionals.
