What is OneDrive for?
Personal and team file storage inside Microsoft 365, with sync, sharing and deep Office integration.
Citadel vs OneDrive
OneDrive and Citadel do different jobs.
OneDrive keeps your Microsoft files in sync. Citadel keeps your most valuable files contained.
What is Citadel for?
Protecting and archiving high-value information: board papers, IP, legal files, financial records, source code and private keys. It is a vault, not a workspace.
Do you need both?
Usually, yes. Most organisations keep OneDrive for everyday work and move their crown-jewel data into Citadel, where there is no sharing surface at all.
An honest comparison.
OneDrive is a capable product and we are not going to pretend otherwise. It is designed for productivity, and it is good at it.
Citadel is designed for containment. It has no sharing, no links, no guests and no sync client, because every one of those is a route out. Those absences would be flaws in a collaboration tool. In a vault they are the point.
Where the protection differs.
Mainstream platforms protect data with encryption and access controls: an algorithm, a key and a permission model. That is a reasonable design, and it rests on the key staying secret.
Citadel adds Secured2's physics-based Quantum-Secure® protection. Files are reduced, separated into fragments with no independent meaning, and distributed, so no single location holds a complete, readable file.
OneDrive and Citadel side by side
| How they compare | |
|---|---|
| Primary purpose | OneDrive: Microsoft 365 file storage and sync. Citadel: a vault for critical data. |
| Endpoint sync | OneDrive: yes, which is convenient and also an attack path. Citadel: no sync client. |
| Identity | OneDrive: tied to your Microsoft tenant. Citadel: a separate boundary with its own private code. |
| Data protection model | OneDrive: encryption and tenant policy. Citadel: reduction, separation and distribution. |
| Best used for | OneDrive: daily documents. Citadel: the files that would make the news. |
Questions people ask
- If our tenant is compromised, is Citadel affected?
- Citadel is a separate identity boundary with its own authentication, so tenant compromise does not automatically reach the vault.
- Can I sign in with Microsoft?
- Yes, with a private code as the second step.
- Does Citadel replace OneDrive?
- No. Keep it for everyday work and move crown-jewel data into the vault.
Keep reading
Citadel by Secured2
Keep working where you work. Vault what you cannot lose.
Citadel sits alongside the tools your teams already use, and takes responsibility for the files that must never leak.