NordLocker Review: Zero-Knowledge Encrypted Cloud Storage Tested

NordLocker is an encrypted cloud storage service that uses zero-knowledge architecture — your files are encrypted on your device before upload, and even Nord Security cannot access them. Plans start at $2.99/month for 500 GB (annual billing), making it the most affordable zero-knowledge cloud storage among major providers.

Cloud storage is convenient, but is it really safe to put sensitive files on Google Drive or Dropbox? These services encrypt data on the server side, sure, but the provider can still access your files. If they receive a legal request, they can hand over your data. And the risk of internal breaches is never zero.

Freelancers and small business owners often need somewhere to keep tax documents and client contracts that is not just another Google Drive folder. This article compares NordLocker against Proton Drive and Tresorit to see which actually delivers on the encryption promise.

This article reviews NordLocker's encryption technology, pricing, and how it compares to other secure cloud storage services.

What Is NordLocker

NordLocker launched in 2019 as an encrypted cloud storage service. It is developed by Nord Security, the same group behind NordVPN, NordPass, and NordLayer.

When you hear "cloud storage," you probably think of Google Drive or Dropbox. NordLocker is fundamentally different. Traditional cloud storage uses server-side encryption (SSE), where the provider holds the keys. NordLocker encrypts files on your device before uploading them. The server only ever stores encrypted data — this is what the industry calls client-side encryption.

Pricing Plans

NordLocker offers a free tier and two paid plans.

Annual billing saves you a significant amount. The 500 GB plan at $2.99/month is less than a cup of coffee for half a terabyte of zero-knowledge encrypted storage.

NordVPN Complete plans include 1 TB of NordLocker storage. If you already use NordVPN, upgrading to a NordVPN Complete plan gets you NordLocker at no extra cost.

Security Architecture

NordLocker's security relies on a combination of proven encryption algorithms.

How Encryption Works

AES-256 is the industry standard used to protect classified information by the US government. xChaCha20-Poly1305, also used by NordPass, is a high-speed cipher that performs especially well on mobile devices. Argon2 won the Password Hashing Competition in 2015 and is considered the state of the art for key derivation.

Zero-Knowledge Architecture

"Zero-knowledge" means NordLocker has no ability to access your data.

1. Files are encrypted on your device
2. Only encrypted data is transmitted to the server
3. Decryption keys exist only on your device
4. Even Nord Security employees see nothing but encrypted binary data on the server

If NordLocker's servers were breached, attackers would only get encrypted data. Without the decryption keys, restoring the original files is computationally infeasible.

Key Features

Automatic Encryption

Every file uploaded to NordLocker is automatically encrypted. Drag and drop a file, and encryption plus upload happen in one step. No extra actions required.

Version History

NordLocker keeps up to 10 previous versions of your files. If you accidentally overwrite something or ransomware encrypts your files, you can roll back to an earlier version. The maximum file size on desktop is 10 GB per file.

Multi-Device Sync

Access your files from Windows, macOS, Android, iOS, or any web browser. Sync happens automatically across devices — upload on your PC, access from your phone.

File Sharing

Share encrypted files with other NordLocker users via email address or unique link with security code. End-to-end encryption is maintained during sharing, so even if someone intercepts the share link, the contents remain unreadable. Note that sharing is only available on paid plans.

Comparison with Competitors

The encrypted cloud storage market has several serious options. Here is how NordLocker fits in.

NordLocker works best for: People already using NordVPN or NordPass. Unifying under Nord Security's ecosystem simplifies account management. The 500 GB plan is also the cheapest option here.

Proton Drive works best for: Privacy maximalists. Swiss jurisdiction, open source, and a strong ecosystem with Proton Mail and Proton VPN. Also supports Linux.

Tresorit works best for: Businesses and teams. Compliance features (GDPR, HIPAA) and team management are its strengths. Overkill and overpriced for individual use.

Limitations and Why NordLocker Is Still Worth It

Let me be upfront about the downsides. But each one has context that matters.

No Linux app. Desktop apps are available for Windows and macOS only. However, the web app works on any browser, so Linux users can still access, view, and download files. For storing sensitive documents, the web interface is perfectly functional.

Local encryption was removed. Local lockers were discontinued in July 2025, making NordLocker a cloud-only service. This is a dealbreaker if you refuse to use cloud storage entirely. On the flip side, focusing exclusively on cloud storage has made the sync and multi-device experience more reliable.

Limited collaboration features. There is no real-time co-editing like Google Drive or Dropbox. But NordLocker is designed for secure storage and sharing, not collaborative document editing. Use Google Docs for collaboration, NordLocker for confidential files — that is the practical split.

Why people still choose NordLocker: The NordVPN + NordPass + NordLocker bundle lets you manage VPN, passwords, and encrypted storage under one account. Nord Security uses zero-knowledge architecture across all its services, ensuring consistent security. And at $2.99/month for 500 GB, it is the most affordable zero-knowledge cloud storage among the major players.

If you are considering the full Nord ecosystem, see our NordVPN Review and NordPass Review. For practical tips on keeping your files and credentials private as a developer, check out 5 Ways Developers Accidentally Leak Personal Info.

Frequently Asked Questions

Is NordLocker safe?

Yes. NordLocker uses zero-knowledge architecture with AES-256 and xChaCha20-Poly1305 encryption. Files are encrypted on your device before upload, and Nord Security cannot access your data. Even if their servers were breached, attackers would only get encrypted binary data.

Can NordLocker see my files?

No. NordLocker uses zero-knowledge encryption, meaning decryption keys exist only on your devices. Nord Security employees cannot view, read, or access your stored files under any circumstances.

Is the free plan enough for everyday use?

The free plan gives you 3 GB of encrypted storage with no time limit. That is enough for tax documents, contracts, and credential files. If you need to store photos, videos, or large project backups, you will want the 500 GB plan ($2.99/month annual).

Does NordLocker work on Linux?

There is no native Linux desktop app. However, the web app works in any browser, so you can upload, download, and manage files on Linux. For automated workflows, this is a limitation worth noting.

What happens if I forget my NordLocker password?

Since NordLocker uses zero-knowledge encryption, Nord Security cannot reset your password or recover your files. You should store your recovery key in a safe place — without it, your data is permanently inaccessible.

How does NordLocker compare to just encrypting files with VeraCrypt?

VeraCrypt is free, open-source, and works entirely offline — great for local encryption. NordLocker adds cloud storage, multi-device sync, file sharing, and version history on top of encryption. If you need access from multiple devices or want to share encrypted files with others, NordLocker is the more practical choice.

Is NordLocker included in NordVPN plans?

NordLocker (1 TB) is included in NordVPN Complete plans, which also bundle NordPass. The standard NordVPN plan does not include NordLocker — you would need to subscribe separately or upgrade to Complete.

Wrapping Up

NordLocker is a specialist in encrypted storage. It is not a general-purpose cloud drive like Google Drive or Dropbox, but when it comes to keeping your files confidential, it excels. The thing users consistently highlight is how little you have to think about it — drag a file in, and it is encrypted and synced across your devices.

If you already use NordVPN or NordPass, the NordVPN bundle plan is the most cost-effective way to add NordLocker. If you are new to Nord Security, start with the free NordLocker plan (3 GB) to see if it fits your workflow.

Related articles:

• NordVPN Review: Pricing, Security, and Performance Tested
• NordPass Review: Zero-Knowledge Password Manager Tested
• Remote Work Security Checklist for Freelancers
• Is NordVPN Safe? A Technical Security Analysis
• How to Check If Your Password Has Been Leaked