1. Introduction: A Security-First Approach to File Sharing

WeTransfer is a widely known service for sharing large files quickly and easily. However, the rise of AI data harvesting and the emergence of quantum computing have fundamentally changed the standards for data privacy and protection.

In July 2025, WeTransfer updated its Terms of Service, using language that many interpreted as allowing uploaded files to be used for AI training. Although the company quickly clarified its stance following significant public backlash, the incident highlighted a vital question: can professionals truly trust a service that has the technical ability to access their files? Privacy should not depend on a provider’s policy, which can change at any time.

This article compares WeTransfer and BLAZE Quantum by focusing on security and data sovereignty to see which service best fits modern business needs.

2. Standard Encryption vs. Quantum-Safe E2EE

While WeTransfer uses standard AES-256 encryption—sufficient for everyday files—there is a significant difference in how the two platforms handle highly sensitive data.

• WeTransfer: While data is encrypted, End-to-End Encryption is not provided. Because the service provider manages the keys, there is an inherent possibility for the provider to access the data.
• BLAZE Quantum: Implements full End-to-End Encryption (E2EE). Files are encrypted on the sender’s device before the upload even begins. Since the decryption keys never leave the local environment, it is technically impossible for BLAZE to access the content.
  • Protection Against AI Training: Since the service provider has zero visibility into the files, data cannot be harvested for AI training or metadata analysis.
  • Quantum-Safe Protection: BLAZE utilizes next-generation “quantum-safe” technology. This provides immediate protection against future threats where quantum computers might be used to crack today’s encryption standards.

Technical Details: For a more detailed look at the protocols and security standards behind our infrastructure, please refer to our whitepaper: Quantum-safe Secure Key Exchange White Paper

3. Cloud Infrastructure Risks and Data Protection

Most SaaS platforms, including WeTransfer, rely on major cloud providers like AWS or Microsoft Azure. However, no cloud service is completely safe from infrastructure-level incidents. For example, a 2022 misconfiguration on Microsoft Azure exposed data from over 65,000 organizations (see also: Microsoft’s official investigation). Regardless of the security measures a platform takes, risks at the infrastructure level remain a reality.

Furthermore, a strategy known as “Harvest Now, Decrypt Later” is a growing concern. Threat actors may steal encrypted data today, intending to decrypt it once quantum computers become powerful enough to break current standards.

With BLAZE’s Quantum-Safe E2EE, even if a leak occurs at the data center level, the files themselves remain unreadable. This independence from infrastructure vulnerabilities ensures that business assets remain secure even during major external breaches.

4. Ease of Use: Balancing Convenience and Security

• WeTransfer: Known for its instant, account-free sending.
• BLAZE Quantum: While the sender requires an account to guarantee E2EE, the workflow is designed to be seamless.
  • Recipients do not need an account: They can download files securely via a shared link without logging in.
  • Senders can simply drag and drop files. There is no need for zipping files or dealing with the complex procedures often found in traditional security software.

5. Secure Receiving: The Upload Portal

WeTransfer offers a “File Request” feature that allows users to receive files without sharing an email address.

BLAZE Quantum’s “Portal” expands on this by focusing on high-stakes confidentiality. Professionals can share a dedicated URL with partners or clients, allowing them to upload files without needing an account. Because the data arrives directly in an E2EE-protected environment, it eliminates the risks associated with vulnerable channels like email attachments or unencrypted web forms, ensuring that intellectual property and personal data remain protected from the moment they are sent.

6. Customization and Custom Domains

In addition to technical security, it is also important to provide sharing partners with a sense of security by presenting the platform as your “official company infrastructure.”

• WeTransfer: Only allows for the use of subdomains like companyname.wetransfer.com. It does not support custom CNAME records, meaning the URL will always reflect that the transfer is taking place on the WeTransfer platform.
• BLAZE Quantum: Business plans and above support Custom Domains (e.g., share.yourcompany.com) in addition to custom logos and backgrounds. This allows for full integration into your company’s brand identity.

7. Monitoring, Logs, and Compliance

For organizations that must manage data centrally, audit logs are essential.

• WeTransfer: While ISO 27001 certified and GDPR compliant, it is explicitly not HIPAA compliant. Detailed audit logs are generally reserved for the high-end Enterprise tier.
• BLAZE Quantum: Provides detailed audit logs of who uploaded or downloaded files and when, available from the Business plan. It complies with ISO 27001, GDPR, and HIPAA (for healthcare data).

8. Global Performance

WeTransfer primarily hosts its infrastructure in Europe and the US. In contrast, BLAZE operates a globally distributed network of data centers. Files are automatically stored at the location closest to the sender, ensuring consistent high-speed performance for transfers to Asia, the Middle East, South America, and beyond. This also allows BLAZE to meet strict data residency requirements, such as keeping EU data within the EU.

9. Feature & Pricing Comparison (2025)

For more details, visit our Pricing page.

10. Conclusion: Which Service Should You Choose?

• Choose BLAZE Quantum if:
  • Data Privacy is the Priority: You handle proprietary work or intellectual property and want to technically block AI training and unauthorized access.
  • You want to project a high level of security awareness to your partners and build trust through a custom domain.
  • You require the highest level of data protection in preparation for the era of quantum computing.
• Choose WeTransfer if:
  • You need to send non-sensitive files as quickly as possible using a widely recognized tool.
  • You enjoy the artistic, ad-supported backgrounds for casual use.

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