SpiderOak review & overview

Long-standing zero-knowledge (No Knowledge) backup and sync where files are encrypted on-device before upload.

SpiderOak sits in the cloud backup space and is most often picked for zero-knowledge-backup, privacy. Below is a quick, no-fluff overview to help you decide if it fits.

Key facts

Who it's for

SpiderOak makes most sense for zero-knowledge-backup.

• zero-knowledge-backup
• privacy

Key features

What you actually get with SpiderOak, drawn from independent reviews and the vendor's own documentation:

• 'No Knowledge' (zero-knowledge) encryption: files encrypted on-device before upload
• 2048-bit RSA and 256-bit AES encryption
• Backup, sync and share in one client
• Unlimited devices on all plans
• Historical file versioning
• Cross-platform (Windows, macOS, Linux)

Integrations

SpiderOak connects with Desktop clients (Windows/macOS/Linux) and Web access.

What makes it stand out

A pioneer of 'No Knowledge' zero-knowledge backup where everything is encrypted on-device first.

Who it's best for

Privacy-first users wanting zero-knowledge backup across unlimited devices, who can tolerate slower speeds.

Strengths & trade-offs

The honest balance for SpiderOak, from independent reviews rather than its sales page. We go deeper in the full SpiderOak review.

Strengths

• + Strong, long-established zero-knowledge ('No Knowledge') encryption
• + Unlimited devices on every plan
• + Files encrypted before leaving your device, even SpiderOak cannot read them

Trade-offs

• - Slow upload/download speeds reported in reviews
• - High price relative to storage and a sparse feature set
• - No public affiliate program found at time of research

Notable facts

Concrete, checkable details rather than marketing claims:

• Calls its zero-knowledge model 'No Knowledge'; files encrypted on-device before upload
• Uses 2048-bit RSA and 256-bit AES
• Every plan supports unlimited devices
• Reviews note slow speeds and a thin feature set for the price
• No public affiliate program identified

No public affiliate program at the time of writing; this page links to vendor and comparison resources instead.