Brand Impersonation: Internal Revenue Service

type.inbound
and (
  // display name contains IRS
  (
    strings.ilike(strings.replace_confusables(sender.display_name),
                  '*internal revenue service*'
    )
  )
  // levenshtein distance similar to IRS
  or strings.ilevenshtein(strings.replace_confusables(sender.display_name),
                          'internal revenue service'
  ) <= 1
)
and (
  any(beta.ml_topic(body.current_thread.text).topics,
      .name in ("Security and Authentication", "Financial Communications")
      and .confidence in ("high")
  )
  or any(beta.ml_topic(beta.ocr(beta.message_screenshot()).text).topics,
         .name in ("Security and Authentication", "Financial Communications")
         and .confidence in ("high")
  )
  or any(ml.nlu_classifier(body.current_thread.text).intents,
         .name == "cred_theft" and .confidence == "high"
  )
  or any(ml.nlu_classifier(beta.ocr(beta.message_screenshot()).text).intents,
         .name == "cred_theft" and .confidence == "high"
  )
)

// and the sender is not in org_domains or from IRS domains and passes auth
and not (
  sender.email.domain.root_domain in $org_domains
  or (
    sender.email.domain.root_domain in ("irs.gov", "govdelivery.com")
    and headers.auth_summary.dmarc.pass
  )
)
// and the sender is not from high trust sender root domains
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