Security checks / Check reference / Logging & threat detection
Log Failed Login Count
Medium Severity Microsoft 365 security check in the Logging & threat detection domain.
Aggregated failed login count for a user. High counts may indicate brute-force attacks Repeated failed logins indicate password spray or brute-force attacks targeting this user Without MFA, a correct password guess gives the attacker full access Siemserva runs this check automatically across your tenant and maps every finding to the compliance frameworks below.
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Check summary
What this check verifies
Aggregated failed login count for a user. High counts may indicate brute-force attacks
Why it matters
Repeated failed logins indicate password spray or brute-force attacks targeting this user Without MFA, a correct password guess gives the attacker full access
How to fix it
Investigate the failure; fix misconfiguration or permission gaps causing the error
Siemserva flags every tenant where this check fails and, with Senserva Trustworthy AI remediation, can propose a validated fix you approve before it applies.
Find this in your own Microsoft 365
This page is the public reference for one check. Siemserva by Senserva runs it, and 650+ others, against your own tenant: it shows exactly where Log Failed Login Count is failing across your environment, ranks it against everything else by real risk, maps it to the frameworks your auditors ask about, and attaches a validated fix you approve before it applies.
Your Three Free Unlimited Audits cover all of it, free with registration: 1 scan to find, 2 to review your fixes.
Built for the people who own this outcome: security and IT teams closing gaps, auditors and compliance teams gathering evidence, and MSPs and MSSPs running it across every client tenant.
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 Logging & threat detection checks
Common questions
What does the Log Failed Login Count check verify?
Aggregated failed login count for a user. High counts may indicate brute-force attacks It is a Medium Severity check in the Logging & threat detection domain, one of the 650+ checks Siemserva runs across Microsoft 365, Intune, Defender, and Entra ID.
How do I fix a Log Failed Login Count finding?
Investigate the failure; fix misconfiguration or permission gaps causing the error 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.4.1v1, and MCSB controls LT-1, LT-3. 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.