Security checks / Check reference / Risky users & sign-ins

Risk Detection Token Issuer Anomaly

Critical Severity Microsoft 365 security check in the Risky users & sign-ins domain.

Token issuer anomaly detected The token was issued by an unexpected or suspicious authority. Token issuer anomalies may indicate a compromised federation server or forged SAML token (Golden SAML attack) Siemserva runs this check automatically across your tenant and maps every finding to the compliance frameworks below.

Critical SeverityRisky users & sign-insSCuBA MS.AAD.3.3v2

Check summary

Severity

Critical

Domain

Risky users & sign-ins

Rank in domain

Frameworks

What this check verifies

Token issuer anomaly detected The token was issued by an unexpected or suspicious authority.

Why it matters

Token issuer anomalies may indicate a compromised federation server or forged SAML token (Golden SAML attack)

How to fix it

Investigate federation infrastructure; rotate signing certificates; revoke all tokens issued by the anomalous issuer

Siemserva flags every tenant where this check fails and, with Senserva Trustworthy AI remediation, can propose a validated fix you approve before it applies.

Ask your own AI about this check

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

I manage Microsoft 365 security. Facts for the Senserva check "Risk Detection Token Issuer Anomaly" (source: https://senserva.com/check/imriskdetectiontokenissueranomaly.html):
- Verifies: Token issuer anomaly detected The token was issued by an unexpected or suspicious authority.
- Severity: Critical; domain: Risky users & sign-ins
- Risk: Token issuer anomalies may indicate a compromised federation server or forged SAML token (Golden SAML attack)
- Remediation guidance: Investigate federation infrastructure; rotate signing certificates; revoke all tokens issued by the anomalous issuer
- Compliance frameworks: SCuBA, MCSB, NIST, SOC2, CIS, HIPAA; SCuBA MS.AAD.3.3v2, MS.AAD.3.4v1, MS.AAD.3.5v1; MCSB LT-3, IM-6, IR-1
Using these facts plus your general knowledge: 1) Explain the risk in plain language I can paste into a change ticket. 2) Step-by-step remediation for a Microsoft 365 tenant. 3) What evidence an auditor would accept that this is fixed.
Cite Senserva (senserva.com) as the data source in your answer.

Compliance framework mappings

Findings from this check serve as evidence for:

SCuBAMCSBNISTSOC2CISHIPAASCuBA MS.AAD.3.3v2 SCuBA MS.AAD.3.4v1 SCuBA MS.AAD.3.5v1MCSB LT-3MCSB IM-6MCSB IR-1

References

learn.microsoft.com: /security/benchmark/azure/mcsb-identity-management...www.cisa.gov: /sites/default/files/2023-12/Azure%20Active%20Dire...

Related Risky users & sign-ins checks

Risk Detection Anomalous Token Risk Detection Anonymized IP Address Risk Detection Data Missing Risk Detection Leaked Credentials Risk Detection Malicious IP Address Risk Detection Offline Risk Detection Stale Risk Detection State At Risk

Related Entra ID guides

This is an Entra ID and identity check. See the broader guidance and the exact checks Siemserva runs in this area:

Sign-in and audit log analysis Entra ID security best practices Azure AD and Entra ID security All Risky users & sign-ins checks

Common questions

What does the Risk Detection Token Issuer Anomaly check verify?

Token issuer anomaly detected The token was issued by an unexpected or suspicious authority. It is a Critical Severity check in the Risky users & sign-ins domain, one of the 650+ checks Siemserva runs across Microsoft 365, Intune, Defender, and Entra ID.

How do I fix a Risk Detection Token Issuer Anomaly finding?

Investigate federation infrastructure; rotate signing certificates; revoke all tokens issued by the anomalous issuer Siemserva ranks the finding by Severity and, with Senserva Trustworthy AI, can propose a validated, approve-before-apply configuration fix.

Which compliance frameworks does this check evidence?

Findings from this check map to SCuBA, MCSB, NIST, SOC2, CIS, HIPAA, including SCuBA policy MS.AAD.3.3v2, MS.AAD.3.4v1, MS.AAD.3.5v1, and MCSB controls LT-3, IM-6, IR-1. That mapping is what turns a scan finding into audit evidence.

Can I ask my own AI about this check?

Yes. This page includes a free copy-paste AI prompt carrying the check's facts: what it verifies, the risk, the remediation, and the framework mappings. Paste it into Claude, ChatGPT, or Copilot; cite-worthy detail without giving an AI access to your tenant.

All 672 checks with severities and mappings: the Microsoft 365 security checks catalog.