Backup Is Not a Cybersecurity Strategy: Immutable Storage and Recovery Concepts for Businesses

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Backup Is Not a Cybersecurity Strategy: Immutable Storage & Recovery Concepts

“We run backups every day.” This statement puts many executives at ease. The uncomfortable truth: Ransomware attacks now systematically encrypt backup systems as well. Anyone without immutable storage and tested recovery processes is in for an unpleasant surprise when disaster strikes.

The 3-2-1-1-0 Rule: What Modern Backup Means

The classic 3-2-1 rule will no longer suffice in 2026. The expanded 3-2-1-1-0 rule defines the current standard:

  • 3 copies of the data
  • 2 different storage media
  • 1 copy stored off-site (offsite or in the cloud)
  • 1 copy that is offline or immutable
  • 0 errors during restoration – verified through regular testing

Air Gap vs. Immutable Storage

Air-gapped backups are physically disconnected from the network. Ransomware cannot reach them. Downside: Recovery takes longer.

Immutable storage is accessible over the network, but is technically secured in such a way that stored data cannot be modified or encrypted for a defined period of time—not even by ransomware or compromised administrator credentials.

RTO and RPO: What Companies Really Care About

  • RTO – Recovery Time Objective: How long should the recovery take? What is the cost of each hour of downtime?
  • RPO – Recovery Point Objective: How much data loss can be tolerated?

These questions must be addressed jointly by the IT department and senior management before the attack.

Common misconceptions

  • “Ransomware only encrypts production data”—wrong; backup systems are being specifically targeted
  • “Our cloud provider handles backups”—Cloud providers back up their infrastructure, not your data
  • “We test the backup once a year”—too infrequently given the current threat landscape

What Companies Need to Do Now

  • Implement the 3-2-1-1-0 rule: use an immutable or offline copy as the default
  • Conduct and document recovery tests at least quarterly
  • Disconnect backup systems from the production network – use your own credentials
  • Set up backup monitoring: Alerts for failed backups

Axsos analyzes your backup infrastructure and develops a strategy tailored to your business needs. Request a backup assessment now.

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Jamil Isayyed

Jamil is an experienced digital process professional, has a rich international background in the information technology and services industry spanning Germany, Greece and Palestine. He holds a Bachelor's degree in Computer Science and a Scrum Master certification from the Scrum Alliance with a focus on Computer Software Engineering. Jamil is passionate about leading and building high-performance teams that deliver exceptional experiences and create valuable opportunities for clients. In addition to his main role, he is the Director of Axsos Academy GmbH. In this role, he leads a dynamic German-Palestinian bootcamp designed to help young people enter the IT market and build a successful career.

Bernd Length

Bernd Länge has been working in the IT industry for over 20 years and advises clients and interested parties on cyber security issues as well as on the development and implementation of information security management and data protection. In this role, he acts as an external data protection and information security officer for clients. It is important to him to take a pragmatic approach and work closely with clients, partners and vendors to ensure that clients' enterprise security is up to date.

Martin Müller

As a technology enthusiast and committed leader, he has been helping companies in the IT sector to shape the future of work for over 20 years. Thanks to his quick thinking and ability to develop effective solutions, he is able to formulate a clear vision of what our future way of working will look like. Step by step, he overcomes challenges and drives us forward into the future. However, he does not accomplish these tasks alone. He has a competent team that he trusts completely and can rely on. Together they overcome every hurdle! Through positive, critical thinking, the second-best solution often leads to incremental success - after all, even an empire wasn't built in a day. This approach makes him unique in his role and he looks forward to working with you on the path to the future.

Rolf Stephan

His enthusiasm for information technology led Rolf to study computer science and graduate from the University of Karlsruhe, now the KIT / Karlsruhe Institute of Technology. Rolf has been working in the IT sector ever since and knows the industry inside out - both nationally and internationally. For more than 25 years, he has focused on international cooperation between experts across all cultures. He also pursued this approach in the first company he founded, AD Solutions AG, which quickly developed into a renowned international IT service provider with several branches in Germany, Switzerland, Austria and the USA. Rolf Stephan has been General Manager since 2010 and CEO of AXON IVY AG, headquartered in Switzerland, since 2021. He has been an investor, shareholder and Chairman of the Supervisory Board of Axsos AG since 2009.

Frank Müller

Frank is a passionate IT expert and visionary entrepreneur. He loves and believes in peace and freedom. For him, these values are more than just words. They are the result of great awareness, responsibility and a solid foundation. His foundation is his faith in Jesus and his unconditional love for people. Frank builds his great visions on this foundation, such as his commitment to peace in the Holy Land. He is not afraid to realize creative and unconventional ideas, such as founding a medium-sized company that spans four countries and cultures and offers its employees a great deal of freedom. Founding a bootcamp academy in the midst of the coronavirus pandemic is certainly one of these ventures. Through these efforts, Frank creates new innovations and added value for his customers and the people who travel with him. With more than 32 years of IT experience and 15 years as an entrepreneur, Frank helps other entrepreneurs focus on their core business and translate their needs into technology opportunities and implementations. His team and he can translate these requirements into a customized IT strategy, processes and technologies. Frank always has a heart for the people he supports and wants to encourage them to break new ground and develop their potential. Frank is open to exchanging ideas with people who see values not as CSR or marketing chatter, but as the basis of their actions. He seeks contact with people who want to change the world for the better. He also welcomes those who are looking for support from him or his team on their journey into the cloud, digitalization or the use of AI.