The rule titled 'Email Attachments With Lots Of Spaces' is designed to detect potentially malicious email attachments characterized by an unusually high number of spaces within their file names. Attackers often employ this tactic to obfuscate file extensions, making it easier to bypass security mechanisms. The detection methodology utilizes the Email data model in Splunk, specifically analyzing email attachments to calculate the ratio of spaces to the total length of the file name. If this ratio exceeds 10%, the rule flags the attachment for further investigation. This behavior is critical as it may indicate an attempt to deliver malicious payloads, leading to harmful code execution or unauthorized access to sensitive data. The rule operates by aggregating email data and is compatible with Splunk Phantom for automated response actions such as investigation and deletion of confirmed malicious attachments.