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Changes in the 120 days since 14 Jun 2026, when Office Sentry started keeping this tenant's audit log that are worth confirming with the client: domain sign-in (federation) changes, new app secrets and certificates, admin roles granted, and Conditional Access policies deleted or switched off. Failed attempts are left out.
| Client | When (UTC) | Change | By | Target | Detail |
|---|---|---|---|---|---|
| Contoso Legal LLP high | 10 Oct 2026, 05:16 | Set domain authentication | mallory.hart@contoso.example | contoso.example | |
Why it matters: Changes how users of a domain sign in; a rogue federation lets someone sign in as anyone | |||||
| Contoso Legal LLP medium | 12 Oct 2026, 05:16 | Add service principal credentials | Contoso Automation | Mail Sync Pro | Credential added |
Why it matters: New secret or certificate: whoever holds it can sign in as the app | |||||
| Contoso Legal LLP medium | 11 Oct 2026, 05:16 | Update application – Certificates and secrets management | admin@contoso.example | Payroll Sync | Added certificate |
Why it matters: New secret or certificate: whoever holds it can sign in as the app | |||||
| Contoso Legal LLP medium | 10 Oct 2026, 17:16 | Add member to role | admin@contoso.example | bobby.marsh@contoso.example | Global Administrator |
Why it matters: Admin role granted | |||||
| Contoso Legal LLP medium | 9 Oct 2026, 17:16 | Add eligible member to role in PIM completed (permanent) | admin@contoso.example | annabel.fraser@ | Exchange Administrator |
Why it matters: Admin role granted | |||||
| Contoso Legal LLP medium | 7 Oct 2026, 17:16 | Update conditional access policy | admin@contoso.example | Require MFA for all users | On → Off |
Why it matters: Conditional Access policy no longer enforced | |||||
| Contoso Legal LLP medium | 6 Oct 2026, 05:16 | Delete conditional access policy | admin@contoso.example | Block risky countries | |
Why it matters: Conditional Access policy deleted | |||||
| Contoso Legal LLP medium | 30 Sep 2026, 17:16 | Update application – Certificates and secrets management | admin@contoso.example | Payroll Sync | Added certificate |
Why it matters: New secret or certificate: whoever holds it can sign in as the app | |||||
| Fabrikam Dental Group high | 10 Oct 2026, 05:16 | Set domain authentication | mallory.quinn@ | fabrikam.example | |
Why it matters: Changes how users of a domain sign in; a rogue federation lets someone sign in as anyone | |||||
| Fabrikam Dental Group medium | 12 Oct 2026, 05:16 | Add service principal credentials | Contoso Automation | Mail Sync Pro | Credential added |
Why it matters: New secret or certificate: whoever holds it can sign in as the app | |||||
| Fabrikam Dental Group medium | 11 Oct 2026, 05:16 | Update application – Certificates and secrets management | admin@fabrikam.example | Payroll Sync | Added certificate |
Why it matters: New secret or certificate: whoever holds it can sign in as the app | |||||
| Fabrikam Dental Group medium | 10 Oct 2026, 17:16 | Add member to role | admin@fabrikam.example | ben.okafor@fabrikam.example | Global Administrator |
Why it matters: Admin role granted | |||||
| Fabrikam Dental Group medium | 9 Oct 2026, 17:16 | Add eligible member to role in PIM completed (permanent) | admin@fabrikam.example | anna.kowalski@ | Exchange Administrator |
Why it matters: Admin role granted | |||||
| Fabrikam Dental Group medium | 7 Oct 2026, 17:16 | Update conditional access policy | admin@fabrikam.example | Require MFA for all users | On → Off |
Why it matters: Conditional Access policy no longer enforced | |||||
| Fabrikam Dental Group medium | 6 Oct 2026, 05:16 | Delete conditional access policy | admin@fabrikam.example | Block risky countries | |
Why it matters: Conditional Access policy deleted | |||||
| Fabrikam Dental Group medium | 30 Sep 2026, 17:16 | Update application – Certificates and secrets management | admin@fabrikam.example | Payroll Sync | Added certificate |
Why it matters: New secret or certificate: whoever holds it can sign in as the app | |||||
| Northwind Traders high | 10 Oct 2026, 05:16 | Set domain authentication | mallory.price@ | northwindtraders.example | |
Why it matters: Changes how users of a domain sign in; a rogue federation lets someone sign in as anyone | |||||
| Northwind Traders medium | 12 Oct 2026, 05:16 | Add service principal credentials | Contoso Automation | Mail Sync Pro | Credential added |
Why it matters: New secret or certificate: whoever holds it can sign in as the app | |||||
| Northwind Traders medium | 11 Oct 2026, 05:16 | Update application – Certificates and secrets management | admin@ | Payroll Sync | Added certificate |
Why it matters: New secret or certificate: whoever holds it can sign in as the app | |||||
| Northwind Traders medium | 10 Oct 2026, 17:16 | Add member to role | admin@ | robert.hughes@ | Global Administrator |
Why it matters: Admin role granted | |||||
| Northwind Traders medium | 9 Oct 2026, 17:16 | Add eligible member to role in PIM completed (permanent) | admin@ | ann.patel@ | Exchange Administrator |
Why it matters: Admin role granted | |||||
| Northwind Traders medium | 7 Oct 2026, 17:16 | Update conditional access policy | admin@ | Require MFA for all users | On → Off |
Why it matters: Conditional Access policy no longer enforced | |||||
| Northwind Traders medium | 6 Oct 2026, 05:16 | Delete conditional access policy | admin@ | Block risky countries | |
Why it matters: Conditional Access policy deleted | |||||
| Northwind Traders medium | 30 Sep 2026, 17:16 | Update application – Certificates and secrets management | admin@ | Payroll Sync | Added certificate |
Why it matters: New secret or certificate: whoever holds it can sign in as the app | |||||
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