Ransomware Recovery with Synology M365 Backup

Ransomware remains one of the biggest cybersecurity threats facing organizations today. Schools, businesses, healthcare providers, and financial institutions all depend on Microsoft 365 for daily operations, making Exchange Online, OneDrive, SharePoint Online, and Microsoft Teams attractive targets for cybercriminals. While Microsoft 365 delivers excellent availability, organizations are still responsible for protecting their own data against accidental deletion, malicious encryption, insider threats, and ransomware attacks.

A strong recovery strategy goes beyond preventing attacks. Organizations must be able to restore clean data quickly to minimize downtime and maintain business continuity. Synology Active Backup for Microsoft 365, combined with immutable storage, Snapshot Replication, and versioned backups, helps organizations recover rapidly while maintaining complete ownership of their backup data. Understand why every organization needs a Microsoft 365 backup strategy

Real-world deployments across education and enterprise environments demonstrate how Synology helps organizations strengthen cyber resilience and accelerate recovery.

Why Microsoft 365 Data Needs Independent Protection

Ransomware no longer targets only on-premises servers. Modern attacks frequently target cloud identities and collaboration platforms.

Critical Microsoft 365 workloads include:

• Exchange Online

• OneDrive

• SharePoint Online

• Microsoft Teams

• Shared mailboxes

• Microsoft 365 Groups

If these services are compromised, organizations risk losing business-critical communications, documents, and collaborative workspaces. See how Centralized Microsoft Office 365 backups improve recovery flexibility and control

The Importance of Versioned Backups

Versioned backups preserve multiple historical copies of protected data.

This enables administrators to recover:

• Files before encryption

• Earlier document versions

• Deleted emails

• SharePoint content

• OneDrive folders

• Microsoft Teams data

Rather than restoring only the most recent backup, organizations can select a clean recovery point before the ransomware attack occurred.

Immutable Backup Protection

Modern ransomware increasingly attempts to encrypt or delete backup repositories.

Synology supports immutable backup technologies that help prevent backup data from being modified or deleted during a defined retention period.

Benefits include:

• Protection against backup tampering

• Defense against accidental deletion

• Greater ransomware resilience

• Secure retention policies

• Reliable recovery points

• Improved compliance

Immutable backups provide an additional layer of protection for business-critical data. Learn how immutable snapshots stop ransomware attacks and protect backups

Snapshot Replication for Rapid Recovery

For organizations protecting Synology NAS workloads, Snapshot Replication enables near-instant recovery.

Key capabilities include:

• Point-in-time snapshots

• Fast file restoration

• Volume recovery

• Replication between Synology systems

• Protection against accidental deletion

• Reduced downtime

Snapshot Replication complements Microsoft 365 backups by protecting on-premises business data. Missing Microsoft 365 backups can increase legal and compliance exposure risks

Education Case Study: Protecting Academic Data

Educational institutions manage thousands of Microsoft 365 users across students, teachers, and administrative staff.

Deployments at Western Reserve Academy, Het Streek, and East Aurora School District demonstrate how centralized Microsoft 365 backups improve recovery readiness while simplifying administration.

With Synology, schools benefit from:

• Independent Microsoft 365 backups

• Self-service recovery

• Long-term retention

• Faster restoration

• Simplified backup management

• Scalable storage

Should ransomware or accidental deletion occur, authorized users and IT administrators can recover emails, assignments, lesson plans, and SharePoint documents without disrupting classroom activities.

Business Case Study: Protecting Enterprise Collaboration

Growing businesses often depend heavily on Microsoft 365 for daily operations.

A typical enterprise environment may include:

• Exchange Online

• OneDrive

• Microsoft Teams

• SharePoint Online

• Windows Servers

• Virtual machines

By combining Active Backup for Microsoft 365, Active Backup for Business, and Snapshot Replication, organizations can protect both cloud and on-premises infrastructure through a unified recovery strategy.

This layered approach helps reduce downtime while simplifying disaster recovery.

Self-Service Recovery Improves Response Time

Following accidental deletion or minor security incidents, many recovery requests do not require IT intervention.

The Active Backup for Microsoft 365 Portal allows authorized users to restore:

• Emails

• OneDrive files

• SharePoint documents

• Microsoft Teams content

Self-service recovery reduces helpdesk workload while allowing users to recover information within minutes.

Building a Layered Recovery Strategy

Organizations strengthen ransomware resilience by combining multiple technologies.

A comprehensive strategy includes:

• Versioned Microsoft 365 backups

• Immutable backup copies

• Snapshot Replication

• Off-site backup copies

• Disaster recovery testing

• Role-based access controls

Together, these layers improve cyber resilience while supporting business continuity.

Supporting the 3-2-1-1-0 Backup Strategy

Many organizations now follow the enhanced 3-2-1-1-0 backup strategy, which recommends:

• Three copies of data

• Two different storage media

• One off-site backup

• One immutable or isolated copy

• Zero unverified backups through regular recovery testing

Synology supports these best practices through Active Backup for Microsoft 365, Snapshot Replication, Hyper Backup, immutable storage options, and centralized management.

Best Practices for Ransomware Recovery

Organizations can improve recovery readiness by:

• Maintaining independent Microsoft 365 backups

• Enabling immutable backup protection

• Using Snapshot Replication for critical NAS data

• Testing recovery procedures regularly

• Monitoring backup health

• Implementing role-based access controls

• Planning long-term retention policies

These practices reduce operational risk while improving business continuity.

Why Organizations Choose Synology

Synology Active Backup for Microsoft 365 provides centralized protection for Exchange Online, OneDrive, SharePoint Online, Microsoft Teams, and Microsoft 365 Groups without recurring per-user backup licensing fees. Combined with immutable backup capabilities, Snapshot Replication, Hyper Backup, scalable NAS storage, and centralized management, Synology helps organizations recover quickly from ransomware while strengthening cyber resilience and protecting critical business data. Recover quickly from ransomware with Synology backups.

About Epis Technology

Epis Technology helps organizations build ransomware-resilient backup environments through Synology consulting, Microsoft 365 backup implementation, storage architecture planning, immutable backup deployment, Snapshot Replication, disaster recovery planning, cybersecurity consulting, and ongoing managed support. With extensive Synology expertise, Epis Technology helps businesses, schools, and regulated organizations design secure, scalable recovery solutions that minimize downtime and strengthen long-term cyber resilience.