Critical servers under attack: Why backup isn’t enough in 2026

Table of contents
Why server compromise is so devastating for MSPs
Why backup alone falls short
How 2026 redefines operational resilience
What MSPs should do next
These four actions can help organizations strengthen their cyber resilience posture:
Dive deeper on cyber resilience for critical servers
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Do you know what it takes to launch a retail website that neatly organizes products and enables customers to add items to their carts with a single click? Do you know what powers the booking system your clients rely on? What is the hidden engine that manages your clients’ logistics, controls their supply chain, processes invoices and stores data for analytics and compliance? These are the systems MSPs are trusted to keep running every day.

Critical servers. Database, application, web and file servers form the foundation of business operations. Whether physical, virtual, containerized or cloud based, these critical assets act as the heartbeat.

Why server compromise is so devastating for MSPs

A compromise of an endpoint, such as a laptop or a mobile phone, can be inconvenient and damaging. For MSPs, it is often manageable.  A compromise of a critical server, however, is different.  It can cascade across applications, users and customers, often triggering SLA breaches and reputational damage. The effects are devastating.

Attackers have understood this for decades. This is why threats like SQL injections, buffer overflow exploits and server-side denial of service attacks are far more destructive than cross-site request forgery or man-in-the-middle attacks. For MSPs managing shared infrastructure or standardized stacks, a single server compromise can impact multiple customers at once.

Most severe breaches making media headlines involve some form of server compromise. Despite large IT budgets, even the biggest corporations are not immune.  Small and medium-sized businesses are hit the hardest, and when they cannot recover or resume operations, MSPs often bear the operational and reputational fallout.

Why backup alone falls short

The antidote is not to focus solely on preventive security controls. MSPs must also accept the reality of risk and adopt measures that enable recovery and rebound. Backup is an essential starting point, but it cannot be the endpoint.

This is where cyber resilience becomes integral. It defines a roadmap to operational and business continuity with minimal disruption, rather than focusing solely on the reinstatement of assets. For MSPs, cyber resilience shifts recovery from a reactive, ticket-driven task to a repeatable service capability that can be delivered consistently across customers.

Cyber resilience builds on cybersecurity, but it is not the same thing. Traditional cybersecurity for servers focuses primarily on prevention and detection by hardening systems, blocking attacks and reducing exposure. Cyber resilience extends beyond this by addressing what happens before, during and after an attack. Aligned with the NIST framework, it emphasizes the ability to anticipate threats, withstand active disruption, recover operations safely and adapt systems and processes based on what is learned. For MSPs, this means not only protecting customer workloads, but also ensuring they can survive compromise, be restored cleanly and continue supporting the business even under sustained attack.

This shift exposes the limits of traditional recovery metrics. Many MSPs define recovery time objectives (RTO) and recovery point objectives (RPO) that can be met through basic backup and restore processes. However, meeting these targets does not automatically guarantee operational resilience or business continuity. What happens if the backup itself is corrupted? Mean time to clean recovery (MTCR) should be treated as a critical metric, ensuring that recovery is not just fast, but also accurate and reliable.

Backup fails not because it is ineffective, but because it is too often trusted without proper validation. Modern attackers deliberately mutate malware and allow it to remain dormant, ensuring that compromised states are quietly captured and preserved in backups. When recovery is triggered, MSPs may unknowingly restore infected systems and reintroduce the threat into production.

Backups that are not continuously scanned for malware, validated for integrity and verified for clean recovery can accelerate reinfection rather than enable resilience. True recovery depends on backups that are actively protected and continuously inspected, ensuring that what is restored is not only available, but also safe to run, reconnect and rely on.

How 2026 redefines operational resilience

With AI-powered adversaries accelerating attack speed and sophistication, 2026 will mark a clear inflection point. Attacks will be more adaptive, more targeted and more damaging. A simple backup strategy will no longer be enough to keep businesses operational. This is not cybersecurity scaremongering. It is the reality organizations are already confronting.

Governments, regulators and standards bodies have recognized this shift. Business continuity and operational resilience are no longer framed as best practices. They are increasingly mandated requirements that are enforced through regulation, audits and compliance frameworks. MSPs are now expected to demonstrate both security controls and recovery readiness.

Cyber resilience is no longer a forward-looking ambition. It is a baseline expectation. Organizations that fail to adapt will not just face downtime. They will face reputational damage, regulatory penalties and in many cases, existential risk.

What MSPs should do next

Building resilience for critical servers in 2026 is less about adding complexity and more about changing how recovery is planned and executed.

These four actions can help organizations strengthen their cyber resilience posture:

1.      Treat backup as a protected asset, not just a copy: Ensure backups are continuously scanned, validated and monitored for malware, mutations and integrity issues before they are ever used for recovery.

2.      Design recovery around clean restoration, not just speed: Move beyond recovery time and RPOs alone. Incorporate metrics such as mean time to clean recovery (MTCR) to ensure restored systems are safe, trusted and production-ready for customers.

3.      Assume compromise and design for recovery: Assume critical servers will be targeted and design recovery processes that function under active attack conditions, not just ideal scenarios. Cloud disaster recovery solutions enable organizations to fail over workloads and resume services from the cloud when primary environments are compromised.

4.      Make cyber resilience a priority for 2026: Ensure you have the right tools to mitigate and detect threats, alongside resilience capabilities that enable you to recover cleanly, adapt to evolving attacks and resume business services with minimal disruption.

Dive deeper on cyber resilience for critical servers

Backup remains essential, but resilience determines whether a business survives disruption. Our latest eBook provides practical guidance, real-world scenarios and a clear roadmap for building recovery capabilities that go beyond backup alone.

Download the e-book to learn how to prepare your critical servers for the realities of 2026 and beyond.

Acronis
Author
Subramani Rao
Senior Manager, Cybersecurity Solutions Strategy
Subramani is a cybersecurity and product marketing expert specializing in go-to-market strategy, product positioning, and driving adoption for cutting-edge security solutions. Known for his analytical mindset and ability to simplify complex cybersecurity concepts, he crafts compelling messaging that resonates with customers and stakeholders. At Acronis, he focuses on bridging cybersecurity and data protection to help organizations stay resilient against evolving threats.

About Acronis

A Swiss company founded in Singapore in 2003, Acronis has 15 offices worldwide and employees in 50+ countries. Acronis Cyber Protect Cloud is available in 26 languages in 150 countries and is used by over 21,000 service providers to protect over 750,000 businesses.