Unauthorized authentication attempt against our Microsoft Entra ID tenant.
Source IP: 45.88.186.144
Application: Azure Active Directory PowerShell
Event time (UTC): 11/2/2026 20:50
Error code: 50053
Result: Sign-in was blocked because it came ...
show moreUnauthorized authentication attempt against our Microsoft Entra ID tenant.
Source IP: 45.88.186.144
Application: Azure Active Directory PowerShell
Event time (UTC): 11/2/2026 20:50
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.
show less
Unauthorized authentication attempt against our Microsoft Entra ID tenant.
Source IP: 45.88.186.144
Application: Azure Active Directory PowerShell
Event time (UTC): 11/1/2026 18:52
Error code: 50053
Result: Sign-in was blocked because it came ...
show moreUnauthorized authentication attempt against our Microsoft Entra ID tenant.
Source IP: 45.88.186.144
Application: Azure Active Directory PowerShell
Event time (UTC): 11/1/2026 18:52
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.
show less
Brute-force / credential-stuffing login attempts against a monitored business sign-in service; every attempt blocked. Event time (UTC): 2026-11-02T20:38:26Z. Network: 1337 Services GmbH (hosting).