Ransomware Prevention and Protection

Increasingly sophisticated ransomware and other malware pose a threat to home and business users alike. Synology products come with prevention and recovery solutions that can help protect or restore your data and hardware.

What is ransomware?

Ransomware is malicious software (malware) that encrypts and makes data inaccessible to the victim. The malware contains threats from the attacker to delete, sell or leak the data if payment is not made. Types of ransomware include crypto malware, lockers, scareware, and doxware.

$20 billion

in total global damage is caused by ransomware attacks annually.1

11 seconds

is the time it takes for another business to be attacked.1

304 million

ransomware attacks were reported in 2020, a 62% yearly rise.2

How to prevent ransomware attacks

Preventative actions are essential to protect against falling victim to ransomware. Use these Synology solutions in addition to your antivirus software of choice.

Prevent access

Reduce the spread of ransomware by setting file, application, and access permissions, and configure secure login credentials using Secure SignIn and C2 Password.

Protect devices

Outdated systems are at greater risk. Update all your NAS at once with Synology CMS, and safeguard other devices using group policies in Synology Directory Server and C2 Identity.

Avoid suspicious files

Spam and phishing emails containing suspicious files are common methods of spreading ransomware.Synology MailPlus provides strong anti-malware protection and spam prevention.

Check for vulnerabilities

Use Synology Security Advisor to routinely scan for malware, system vulnerabilities, and abnormal login activities. Implement recommended changes to improve your NAS security.

Learn more

How to recover from a ransomware attack

If a ransomware attack is successful, having backups of your data can reduce the damage caused. Your Synology NAS comes with robust backup features to help you continue operations with minimal disruption. Before restoring backups, it is important to make sure your device has been cleaned.

Back up to your NAS

Your Synology NAS is perfectly suited as a backup location for all your digital assets.

Safeguard important files

Avoid getting locked out of your files and folders by setting up real-time versioning or scheduled backups. Your NAS can retain up to 32 previous versions of files from any computer to keep them safe from folder encryption. Learn more

Protect entire systems

Prevent threat actors from holding your deployments to ransom by backing them up to your NAS. You can easily back up data from physical computers, virtual environments, or SaaS applications to your NAS. Learn more

Synchronize cloud-based data

Keep an updated copy of your public cloud-hosted files on a Synology NAS. Your data can be encrypted on your NAS to keep them safe in the event that your public cloud service becomes compromised or inaccessible. Learn more

Back up to your NAS

Back up off-site

Add another layer of protection and complete your 3-2-1 backup strategy by keeping copies of your files and restoring them if you are affected by ransomware.

Leverage another NAS

Defend against ransomware attacks by taking snapshots of shared folders or LUNs and replicating them to another Synology NAS. Learn more

Store data on an external device

Copy your NAS data and configurations to a separate device for safekeeping. Back up your NAS to remote servers or cloud destinations with powerful customization options to reduce storage usage and protect data against unauthorized access. Learn more

Keep a cloud copy

Protect individual objects, entire on-premises devices, and NAS data and configurations by retaining unlimited backup copies that are encrypted and stored in a secure cloud infrastructure powered by Synology. Learn more

Back up off-site

Restore your backups

Even if your devices have been compromised, you can recover your data and applications by restoring your backups from a NAS or an off-site location.

Take back your files and folders

Quickly restore access to LUNs and shared folders on a primary NAS or fail over to another NAS in seconds with Snapshot Replication. Previous versions of files stored on computers can be restored from a NAS using Synology Drive Client.

Regain your system

If any of your endpoints are compromised, you can recover PCs, servers, and virtual machines to a previous clean state using backups on your NAS with Active Backup for Business. Your NAS can also be fully restored from an off-site backup with Hyper Backup.

Recover with the cloud

Cloud backups are not directly connected to compromised on-premise devices, making them a safe and secure location to retrieve data from. C2 Backup lets you restore entire PCs or individual files, while C2 Storage for Hyper Backup stores copies of your Synology NAS files and system configurations for fast and reliable recovery.

Restore your backups

Reduce your risk, protect your data

Having an effective data protection plan can mitigate the risk of being locked out of critical data. Synology has a complete collection of data protection solutions to secure home and work environments from data loss.


More ways to protect your data

Manage your deployments

Your NAS has extensive features to help you centrally manage data access permissions.

Monitor all your NAS

Identify suspicious activities on any of your NAS and keep your devices healthy, no matter where in the world they are.

Backup best practices

Watch how to start protecting your IT infrastructure against ransomware threats.

Protecting businesses with backups


An integrated off-site backup solution was implemented using C2 Storage to fend off the threat of ransomware attacks.


Active Backup for Business delivers fast backup speeds and efficient storage use to protect all mission-critical data.


All files stored on the NAS are protected using Snapshot Replication, enabling near-instantaneous point-in-time restoration.

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  1. Morgan, Steve. “Global Ransomware Damage Costs Predicted To Reach $20 Billion (USD) By 2021”. Cybersecurity Ventures, https://cybersecurityventures.com/global-ransomware-damage-costs-predicted-to-reach-20-billion-usd-by-2021/

  2. Johnson, Joseph. “Annual number of ransomware attacks worldwide from 2014 to 2020”. Statista, https://www.statista.com/statistics/494947/ransomware-attacks-per-year-worldwide/