Data Breach Defense: Multifactor Authentication
| Criteria | Cubbit | Filen | Mega | ProtonDrive | Sync |
| Available free storage | 1 GB | 10 GB | 20 GB | Shared with your email storage | 5 GB |
| Open Source? | No | Client | Client | No | No |
| Multifactor authentication offered? | No | Yes | Yes | Yes | Yes |
| Addtional notes | Peer-to-peer | Concerns raised about encryption implementation. | No apps, web only | Audited | |
| Free account signup link is hidden | Still in beta, expect bugs |