Compare Proton Drive vs. ShieldFive

Proton Drive is the secure workspace for storing sensitive data and collaborating with confidence across teams, clients, and external partners. With full end-to-end encryption, you can share files, contracts, and business documents securely — and stay in control at all times. Set passwords, expiration dates, or revoke access instantly. Files are encrypted on your device before upload, and only you and your collaborators can access them. Even Proton can’t see your data. Each user gets 1 TB of storage, and you can scale as your organization grows. Proton Drive is developed in Switzerland by the makers of Proton Mail. We’re independent, built on privacy-first principles, and free from Big Tech surveillance, lock-in, or monetization of user data. We offer more than secure storage: - Real-time collaboration with Proton Docs - Granular sharing controls for external and internal access - File recovery for peace of mind - Cross-device access, including Windows, macOS, iOS, and Android We also help you meet compliance requirements out of the box. Proton Drive supports: - GDPR, HIPAA, DORA, NIS2, and ISO 27001 - Independently audited SOC 2 Type II compliance - No complex setup or third-party integrations required. By choosing Proton Drive, you show your clients, partners, and regulators that privacy and security are built into your workflows — not an afterthought.

ShieldFive is a software solution designed for document collection, specifically tailored for accounting, immigration, and mortgage sectors. The process begins when a firm provides a client with a secure upload link accompanied by a PIN, enabling the client to upload documents easily from any device without the need for an account, application, or password. Each file undergoes encryption within the client's browser prior to upload, ensuring that only the firm can access it, while ShieldFive retains the encrypted data. Firms can create request checklists for various forms, including Form 1040, I-130, I-485, and mortgage applications, allowing them to track which documents are still outstanding, confirm receipt of submitted items, and include the client’s email for reminders sent by ShieldFive, which can occur up to twice. During the trial and on the paid plan, the client upload page prominently features the firm's name and logo. The encryption utilized is a post-quantum hybrid method (ML-KEM-1024 coupled with X25519), and the core cryptographic components are open source. Additionally, the service is hosted in the EU and is offered for free for the first 14 days, followed by three active requests at no charge, with a monthly fee of EUR 29 for each seat thereafter; clients incur no costs. It is important to note that the platform is designed solely for document intake and does not support e-signatures, thereby streamlining the submission process for users.