{"id":15892,"date":"2026-02-12T07:06:05","date_gmt":"2026-02-12T06:06:05","guid":{"rendered":"https:\/\/coreit.se\/okategoriserad\/how-does-microsoft-365-identify-suspicious-activity"},"modified":"2026-03-26T07:15:28","modified_gmt":"2026-03-26T06:15:28","slug":"how-does-microsoft-365-identify-suspicious-activity","status":"publish","type":"post","link":"https:\/\/coreit.se\/en\/faq\/how-does-microsoft-365-identify-suspicious-activity","title":{"rendered":"How does Microsoft 365 identify suspicious activity?"},"content":{"rendered":"\n
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How does Microsoft 365 identify suspicious activity?<\/h2>\n\n
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Microsoft 365 identifies suspicious activity through continuous monitoring of user and system behavior, log analysis, and advanced security algorithms. Tools like Microsoft Defender and Sentinel detect unusual logins, data breaches, suspicious file access, and email traffic anomalies, allowing administrators to act quickly to protect data and maintain compliance. <\/p>\n <\/div>\n\n

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Background and overview<\/h2>\n

In cloud environments, continuous monitoring is essential to prevent data breaches and security incidents. Microsoft 365 offers integrated tools to track and analyze activity in real time. <\/p>\n\n

Logging of user activity<\/h3>\n

All logins, file changes, shares and administrative actions are logged to provide a complete picture of user behavior.<\/p>\n\n

Analysis of anomalies<\/h3>\n

The system uses machine learning and heuristic algorithms to identify unusual patterns, such as unusual logins or data transfers.<\/p>\n\n

Integration with security tools<\/h3>\n

Microsoft Defender, Sentinel and Purview aggregate data from multiple services to provide a holistic view of potential threats.<\/p>\n\n

Alerting and notifications<\/h3>\n

Administrators receive automatic alerts for suspicious activity, enabling rapid response and incident management.<\/p>\n\n

Risk-based authentication<\/h3>\n

It is based on analysis of user behavior and location information, which can trigger MFA or other security measures in case of anomalous logins.<\/p>\n\n

Compliance and reporting<\/h3>\n

Suspicious activity is documented for audits, security reviews and regulatory requirements, such as GDPR.<\/p>\n\n

Proactive security<\/h3>\n

The system learns from past incidents and trends to improve detection and prevent future threats.<\/p>\n <\/div>\n\n

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Main features for detecting suspicious activity<\/h2>\n
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  • Logging:<\/strong> Tracks user and administrator events continuously.<\/li>\n
  • Anomaly detection:<\/strong> Identifies unusual patterns with AI and machine learning.<\/li>\n
  • Integration:<\/strong> Brings together data from Defender, Sentinel and Purview for a holistic analysis.<\/li>\n
  • Alert management:<\/strong> Sends automatic alerts in case of suspicious activity.<\/li>\n
  • Risk-based authentication:<\/strong> MFA and security measures are activated in case of anomalies.<\/li>\n
  • Reporting:<\/strong> Documenting incidents for compliance and audit.<\/li>\n <\/ul>\n <\/div>\n\n
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    Related questions<\/h2>\n\n
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    What types of activity are flagged as suspicious?<\/h3>\n

    Unusual logins, data transfers, file changes and email patterns are automatically flagged.<\/p>\n <\/div>\n\n

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    How do administrators receive notifications?<\/h3>\n

    Through automatic alerts in Microsoft 365 security tools, such as Defender and Sentinel.<\/p>\n <\/div>\n\n

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    Can suspicious activity be linked to compliance requirements?<\/h3>\n

    Yes, logs and incident reports support audit and regulatory requirements, such as GDPR.<\/p>\n <\/div>\n\n

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    How does risk-based authentication work?<\/h3>\n

    It analyzes user behavior and location data to trigger safety measures, such as MFA, in case of anomalies.<\/p>\n <\/div>\n\n

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    Can detection improve over time?<\/h3>\n

    Yes, the system uses historical data and machine learning to continuously improve threat detection.<\/p>\n <\/div>\n\n <\/div>\n <\/div>\n <\/div>\n<\/div>\n\n