> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/unusual-display-name-in-from-header.md).
# Unusual display name in From header
### Synopsis
| Field | Value |
| -------------------- | -------------------------------------------------- |
| Activation Period | 14 Days |
| Training Period | 30 Days |
| Test Period | N/A (single event) |
| Deduplication Period | 1 Day |
| Required Data | Microsoft 365 Emails |
| Detection Modules | Email |
| ATT\&CK Tactic | Reconnaissance (TA0043), Initial Access (TA0001) |
| ATT\&CK Technique | Phishing for Information (T1598), Phishing (T1566) |
| Severity | Informational |
### Description
An email was detected with an unusual display name in the From header.
### Attacker's Goals
Evade defenses and hide potential malicious data inside the email display name.
### Investigative actions
* Analyze the email further to determine the source of the anomaly and what can be done about it.
### Variations
Unusual display name in the From header containing an embedded URL
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------- |
| ATT\&CK Tactic | Reconnaissance (TA0043), Initial Access (TA0001) |
| ATT\&CK Technique | Phishing for Information (T1598), Phishing (T1566) |
| Severity | Low |
**Description**
An email was detected with an unusual sender display name in the From header containing an embedded URL.
**Attacker's Goals**
Evade defenses and hide potential malicious data inside the email display name.
**Investigative actions**
* Analyze the email further to determine the source of the anomaly and what can be done about it.
Unusual display name in the From header that is identical to the email address
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------- |
| ATT\&CK Tactic | Reconnaissance (TA0043), Initial Access (TA0001) |
| ATT\&CK Technique | Phishing for Information (T1598), Phishing (T1566) |
| Severity | Informational |
**Description**
An email was detected where the display name in the From header is unusual and matches the sender email address.
**Attacker's Goals**
Evade defenses and hide potential malicious data inside the email display name.
**Investigative actions**
* Analyze the email further to determine the source of the anomaly and what can be done about it.
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