Security checks / Check reference / Risky users & sign-ins
Risk Detection Suspicious IP Address
High Severity Microsoft 365 security check in the Risky users & sign-ins domain.
Sign-in from a suspicious IP address flagged by threat intelligence Suspicious IPs are associated with brute-force attacks, botnets, or anonymization services used by threat actors Siemserva runs this check automatically across your tenant and maps every finding to the compliance frameworks below.
Check summary
What this check verifies
Sign-in from a suspicious IP address flagged by threat intelligence
Why it matters
Suspicious IPs are associated with brute-force attacks, botnets, or anonymization services used by threat actors
How to fix it
Block the IP via CA; investigate the sign-in; require MFA from untrusted locations
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.
Compliance framework mappings
Findings from this check serve as evidence for:
References
Related Risky users & sign-ins checks
Common questions
What does the Risk Detection Suspicious IP Address check verify?
Sign-in from a suspicious IP address flagged by threat intelligence It is a High 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 Suspicious IP Address finding?
Block the IP via CA; investigate the sign-in; require MFA from untrusted locations 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.