Brand impersonation: SendGrid

type.inbound
and (
  (
    // SendGrid impersonation patterns
    strings.ilike(strings.replace_confusables(sender.display_name),
                  '*sendgrid*'
    )
    or strings.ilevenshtein(strings.replace_confusables(sender.display_name),
                            'sendgrid'
    ) <= 1
    or (
      strings.ilike(strings.replace_confusables(sender.email.local_part),
                    '*sendgrid*'
      )
      and (
        sender.display_name is null
        or strings.ilike(strings.replace_confusables(subject.base),
                         '*sendgrid*'
        )
      )
    )
    or any(ml.logo_detect(file.message_screenshot()).brands,
           .name == "SendGrid" and .confidence == "high"
    )
  )
  or (
    // Twilio impersonation patterns
    strings.ilike(strings.replace_confusables(sender.display_name), '*twilio*')
    or strings.ilevenshtein(strings.replace_confusables(sender.display_name),
                            'twilio'
    ) <= 1
    or (
      strings.ilike(strings.replace_confusables(sender.email.local_part),
                    '*twilio*'
      )
      and (
        sender.display_name is null
        or strings.ilike(strings.replace_confusables(subject.base), '*twilio*')
      )
    )
  )
  or strings.icontains(body.current_thread.text, "the sendgrid team")
  or 2 of (
    regex.icontains(body.current_thread.text, '(?:Twilio|SendGrid)'),
    strings.icontains(body.current_thread.text, '1801 California St'),
    strings.icontains(body.current_thread.text, 'Denver, CO 80202')
  )
  // SendGrid content from non-SendGrid marketing platforms
  or (
    sender.email.domain.root_domain in (
      "selfcast.com",
      "mailchimp.com",
      "constantcontact.com",
      "hubspot.com",
      "klaviyo.com",
      "mailgun.com"
    )
    and (
      (
        (
          strings.icontains(body.current_thread.text, "sendgrid")
          or strings.icontains(subject.base, "sendgrid")
        )
        and 3 of (
          strings.icontains(body.current_thread.text, "webhook"),
          strings.icontains(body.current_thread.text, "endpoint"),
          strings.icontains(body.current_thread.text, "api"),
          strings.icontains(body.current_thread.text, "delivery"),
          strings.icontains(body.current_thread.text, "event notification")
        )
      )
      and (
        // Look for SendGrid-related content with non-SendGrid tracking links
        any(body.links,
            strings.icontains(.href_url.url, "selfcast.com")
            or (
              .display_url.url is not null
              and strings.icontains(.display_url.url, "sendgrid.com")
            )
        )
      )
    )
  )
)
and (
  // Content analysis using ML/NLU
  any(ml.nlu_classifier(body.current_thread.text).topics,
      .name in (
        "Security and Authentication",
        "Secure Message",
        "Reminders and Notifications",
        "Software and App Updates",
        "Customer Service and Support"
      )
      and .confidence in ("medium", "high")
  )
  or any(ml.nlu_classifier(beta.ocr(file.message_screenshot()).text).topics,
         .name in (
           "Security and Authentication",
           "Secure Message",
           "Reminders and Notifications",
           "Software and App Updates",
           "Customer Service and Support"
         )
         and .confidence in ("medium", "high")
  )
  or any(ml.nlu_classifier(body.current_thread.text).intents,
         .name == "cred_theft" and .confidence == "high"
  )
  or any(ml.nlu_classifier(beta.ocr(file.message_screenshot()).text).intents,
         .name == "cred_theft" and .confidence == "high"
  )

  // any capacity or limits mentioned
  or any([subject.base, body.current_thread.text],
         (strings.icontains(., "capacity") or strings.icontains(., "limit"))
         and regex.icontains(., '\breach(?:\b|ed)')
  )
)

// and the sender is not in org_domains or from sendgrid domains and passes auth
and not (
  sender.email.domain.valid
  and (
    sender.email.domain.root_domain in $org_domains
    or (
      sender.email.domain.root_domain in (
        "sendgrid.com",
        "sendgrid.net",
        "twilio.com",
        "swoogo.com", // events planning software used by Twillio
        "sendsafely.com", // secure delivery used by Twillio
        "evolve.com", // same address as Twillio
        "sendgridsolutions.com"
      )
    )
  )
  and headers.auth_summary.dmarc.pass
)
// Exclude high trust domains with valid auth and solicited senders
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
)
and not profile.by_sender().solicited