Personal cloud storage is a real data path. Siemserva checks OneDrive sharing and access so it does not become a leak.
OneDrive for Business is convenient and easy to overshare from. Sharing settings, link policies, and access controls decide whether corporate data walks out a personal drive. Siemserva audits OneDrive configuration alongside the rest of your tenant.
Siemserva runs standalone for full Microsoft 365 posture across configurations, logs, and CVEs, or right alongside OneDrive.
| What OneDrive does well | Where teams want more |
|---|---|
| Seamless file sync and access across devices. | Oversharing and broad link policies are easy to overlook. |
| Sharing and link controls tied to the Microsoft 365 identity model. | Hard to confirm settings match intent across all users. |
| Retention and labeling through Purview. | No native risk ranking or compliance mapping. |
| Admin controls for organization-wide policy. | Exposure data is not consolidated. |
| Capability | OneDrive | Siemserva |
|---|---|---|
| Sharing and link posture verdict | Manual | Native checks |
| Risk ranking | No | By Severity |
| Compliance mapping | No | MCSB, CISA SCuBA |
| Unified with SharePoint and Teams | No | Yes |
Comparison reflects general capabilities at time of writing and is provided for research. Vendor features change; verify current specifics with each vendor.
Every finding, and the full graph behind it, is yours. Through the Senserva SDK and the Claude MCP you get complete access to the underlying Siemserva data, so you can query it, extend it, and build your own checks, reports, automation, and integrations on top. Nothing is locked away in a vendor cloud, and the data stays with you.
Siemserva does not just record pass or fail. It models your target environment, the identities, devices, applications, policies, and how they relate, as a queryable graph. That makes the data a foundation for new work: custom analysis, threat hunting, and automation, not a static checklist you read once and set aside.
OneDrive for Business gives every user gigabytes of synced cloud storage. That convenience means corporate data lands on personal-feeling space and syncs to every device a user signs in on. Sharing links, sync to unmanaged machines, and external access are the settings that decide how far that data can travel.
Like SharePoint, OneDrive sharing hinges on default link types and external sharing scope. Anonymous links, links that never expire, and broad external sharing are the common gaps. Tightening default link scope and enforcing expiration limits accidental exposure without blocking legitimate collaboration.
OneDrive doubles as a recovery surface. Known Folder Move redirects Desktop, Documents, and Pictures into OneDrive, version history enables rollback after ransomware, and Files Restore can rewind a whole drive to a point in time. Whether these are enabled, and retention is long enough, decides how survivable an endpoint compromise is.
Sensitivity labels and Purview DLP apply to OneDrive just as they do to SharePoint, classifying and protecting the files individuals create and share. Because OneDrive is where ad-hoc and draft data accumulates, it is often where unlabeled sensitive content quietly piles up.
Both are covered, and shown together, since data exposure usually spans them.
No agents and no cloud service. Siemserva reads your tenant through Microsoft's APIs and runs on Windows or Mac. You can explore the whole product first on the free Advanced Microsoft 365 Security Simulator, with no access to your environment at all.
Yes. The Advanced Microsoft 365 Security Simulator and the game let you explore a full scan, the findings, the AI, and the reports for free. Scanning your own tenant uses a license key, and 501(c)(3) nonprofits get the full version free.
Yes. It supports multi-tenant and MSP fleets, with bulk tenant security audits and unified, client-ready reporting across many customers.
Siemserva is built for AI from the ground up and also runs fully without it. Turn it on for AI-enhanced reports and to run the product from Claude, or the AI of your choice, via our market-leading MCP. You bring your own model, so there is no AI markup, and the rich data model keeps calls and cost low.
See exactly what Siemserva finds on a rich, realistic simulated tenant, no access to your environment needed. Launch it right after install, or ask for a free key. Teams report cutting Microsoft 365 and Azure hardening time by up to 80 percent.
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