+|Detection technology|Select one or more values¹: <ul><li>**Advanced filter**: Signals based on machine learning.</li><li>**Antimalware protection**</li><li>**Bulk**</li><li>**Campaign**</li><li>**Domain reputation**</li><li>**File detonation**: [Safe Attachments](safe-attachments-about.md) detected a malicious attachment during detonation analysis.</li><li>**File detonation reputation**: File attachments previously detected by [Safe Attachments](safe-attachments-about.md) detonations in other Microsoft 365 organizations.</li><li>**File reputation**: The message contains a file that was previously identified as malicious in other Microsoft 365 organizations.</li><li>**Fingerprint matching**: The message closely resembles a previous detected malicious message.</li><li>**General filter**</li><li>**Impersonation brand**: Sender impersonation of well-known brands.</li><li>**Impersonation domain**: Impersonation of sender domains that you own or specified for protection in [anti-phishing policies](anti-phishing-policies-about.md#impersonation-settings-in-anti-phishing-policies-in-microsoft-defender-for-office-365)</li><li>**Impersonation user**</li><li>**IP reputation**</li><li>**LLM content analysis**: Analysis by Microsoft's purpose-built large language models to detect harmful email.</li><li>**Mail bombing**: A distributed denial of service (DDoS) attack that typically subscribes recipients to a large number of legitimate newsletters and services. The resulting volume of incoming email within minutes intends to overwhelm the recipient's mailbox and email security systems, and acts as a precursor to malware, ransomware, or data exfiltration.</li><li>**Mailbox intelligence impersonation**: Impersonation detections from mailbox intelligence in [anti-phishing policies](anti-phishing-policies-about.md#impersonation-settings-in-anti-phishing-policies-in-microsoft-defender-for-office-365).</li><li>**Mixed analysis detection**: Multiple filters contributed to the message verdict.</li><li>**spoof DMARC**: The message failed [DMARC authentication](email-authentication-dmarc-configure.md).</li><li>**Spoof external domain**: Sender email address spoofing using a domain that's external to your organization.</li><li>**Spoof intra-org**: Sender email address spoofing using a domain that's internal to your organization.</li><li>**URL detonation**: [Safe Links](safe-links-about.md) detected a malicious URL in the message during detonation analysis.</li<li>**URL detonation reputation**: URLs previously detected by [Safe Links](safe-links-about.md) detonations in other Microsoft 365 organizations.</li><li>**URL malicious reputation**: The message contains a URL that was previously identified as malicious in other Microsoft 365 organizations.</li></ul>|
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