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Body: Yellow highlighted text markers

Sublime Rules

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Summary
Detects inbound messages containing two or more HTML span elements with data-markjs="true" and inline style background-color: rgb(255, 241, 0). This pattern signals potential evasion through visual markup manipulation using Mark.js highlighting. The rule triggers when the count of such spans in body.html.raw is >= 2, indicating a deliberate attempt to obscure or highlight content for phishing/BEC campaigns. While low severity, this rule helps flag suspicious emails that employ visual deception tactics and warrants further inspection of the links or instructions within the highlighted segments.
Categories
  • Web
Data Sources
  • Network Traffic
Created: 2026-06-17