Unauthorized authentication attempt against our Microsoft Entra ID tenant.
Source IP: 45.83.31.21 ...
show moreUnauthorized authentication attempt against our Microsoft Entra ID tenant.
Source IP: 45.83.31.21
Application: Azure Active Directory PowerShell
Event time (UTC): 8/22/2026 6:27
Error code: 50053
Result: Sign-in was blocked because it came from an IP address with malicious activity
Destination service: login.microsoftonline.com
Destination port: TCP 443
Activity is consistent with automated password spraying, credential stuffing, or brute-force authentication attempts.
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(PERMBLOCK) 45.83.31.21 (US/United States/-) has had more than 4 temp blocks in the last 86400 secs; ...
show more(PERMBLOCK) 45.83.31.21 (US/United States/-) has had more than 4 temp blocks in the last 86400 secs; Ports: *; Direction: 1; Trigger: LF_PERMBLOCK_COUNT; Logs:
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(smtpauth) Failed SMTP AUTH login from 45.83.31.21 (US/United States/-): 5 in the last 3600 secs; Po ...
show more(smtpauth) Failed SMTP AUTH login from 45.83.31.21 (US/United States/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs:
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