Sublime Security high experimental mql

Potential prompt injection attack in body HTML

Detects messages containing references to major AI tools (like Gemini, Copilot, ChatGPT, or Claude) in non-standard HTML elements.

View Source

Detection Logic

type.inbound
and length(filter(html.xpath(body.html, "//*[local-name() = 'admin']").nodes,
                  length(.display_text) > 0
                  and strings.ilike(.display_text,
                                    '*gemini*',
                                    '*copilot*',
                                    '*chatgpt*',
                                    '*claude*'
                  )
           )
) > 0

// negate highly trusted sender domains unless they fail DMARC authentication
and (
  (
    sender.email.domain.root_domain in $high_trust_sender_root_domains
    and not headers.auth_summary.dmarc.pass
  )
  or sender.email.domain.root_domain not in $high_trust_sender_root_domains
)

Field Validations

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