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DETECTION OVERVIEW

Unusual Email Domain Length

Risk Factors

An unauthenticated attacker can manipulate email messages or SMTP data to exploit vulnerabilities and achieve remote code execution (RCE) on SMTP servers. A successful exploit can enable an attacker to take control of an email server and gain an entry point for further attacks on your network.

Category

Exploitation
Next in Exploitation: Unusual HTTP Path Traversal Activity

Background

Mitigation Options

Install relevant patches for affected mail transfer agents (MTAs) (see related CVEs)

MITRE ATT&CK ID

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