Launching autumn 2026

TRACER365 · Microsoft 365 sharing and permissions auditing

See exactly who can access what across your Microsoft 365 sharing

— with the noise removed. TRACER365 audits external sharing in SharePoint and OneDrive: links anyone can open, files and folders shared with guests, and the access a guest gets through a shared parent folder. Inherited copies of the same access are folded into one finding, so what you review is a list of decisions.

External sharing — findingsIllustrative sample dataSEVERITYFINDINGLOCATIONHIGH"Anyone" link — no sign-in requiredFinance / Q3-forecast.xlsxHIGHInherited guest accessHR / Policies (folder)↳ 142 duplicate child findings collapsed under this oneMEDDirect grant to guestProjects / Fusion-brief.docxMED"Everyone except external users" grantIntranet / Handbook.pdfLOWUnredeemed guest invitationSales / Pricelist-2026.xlsx2,412 raw findings → 217 after cascade de-duplication● Read-only — nothing changed in the tenantScan finished 14 minutes ago
Illustrative sample data — not a screenshot, not a customer tenant.

The noise problem

The 200 findings that matter — not the 50,000 you'd wade through

Share one folder with a guest and the files beneath it inherit that access. Built-in reports and raw permission exports can list each of those files as its own row: one exposure, repeated hundreds of times, until nobody reviews any of it.

TRACER365 files each inherited copy under the one grant that caused it, so you decide about the cause once. We call this cascade de-duplication. In our testing, roughly 91% of raw findings collapsed as duplicates. That is what we saw, not a figure to expect from your tenant. What matters is that the list left over, ranked by severity, is one a person can actually work through.

How inherited guest access works →

Without de-duplication

One guest grant on an HR folder becomes hundreds of identical "external access" rows, one per file. Then multiply that by every share in the tenant.

With TRACER365

One finding: the grant itself, with the affected items grouped beneath it. You review the cause once, not every symptom.

Tenant-wide, read-only, and no extra Microsoft licences

  • External sharing, audited

    Links anyone can open, grants to guests, guest access inherited from a parent folder, and invitations not yet accepted, across SharePoint Online and every OneDrive in one scan.
  • 100% read-only

    TRACER365 reads your tenant through an app registration you create in your own Microsoft Entra ID, with read-only permissions your security team can check. Nothing in your tenant is changed.
  • Your data stays yours

    TRACER365 runs locally, in your environment. Audit data never leaves it — a real data-residency advantage over SaaS scanners for EU organisations.
  • No extra Microsoft licences

    No Microsoft 365 Copilot licence. No SharePoint Advanced Management add-on. It works with what you already have.

How it works

Three steps to a defensible answer

  1. 01 — Connect, read-only

    Create the app registration in your own tenant, with read-only permissions. You or your security team can see exactly what it may read, and that it can change nothing.

  2. 02 — Scan with live status

    Watch the scan as it runs: which sites and drives are in progress, what has been covered, and what could not be scanned.

  3. 03 — Review what matters

    Work a severity-ranked, de-duplicated findings list. Schedule email reports, follow trends scan over scan, and give non-IT stakeholders a viewer role.

Compliance

Evidence for the access-control question GDPR already asks you

GDPR Article 32 expects you to control — and be able to show — who can access personal data. TRACER365 produces exactly that evidence for your Microsoft 365 sharing: who can access what, especially externally, on a schedule, delivered to a reviewer.

External sharing & GDPR

Know what your tenant is sharing before someone else does

Free 30-day trial at launch — no registration. Until then, get notified the day the installer ships.