Business Email Compromise (BEC) attempt from untrusted sender (French/Français)

type.inbound
and length(body.links) == 0
and ml.nlu_classifier(body.current_thread.text).language == "french"
and 1 of (
  regex.icontains(subject.subject,
                  '(mise (a
| à) jour
| changé
| changement).{0,20}(bancaire
| de banque)'
  ),
  regex.icontains(body.current_thread.text,
                  '(changement
| changé) de (banque)
| changement bancaire
| coordonnées.{0,20}(compte
| banque
| bancaire
| salaire)',
  ),
  (regex.icontains(body.current_thread.text, 'parler.{0,20}confiance'))
)
// negating legit replies
and not (
  (
    strings.istarts_with(subject.subject, "RE:")
    // out of office auto-reply
    // the NLU model will handle these better natively soon
    or strings.istarts_with(subject.subject, "Automatic reply:")
    or regex.imatch(subject.subject,
                    '(\[[^\]]+\]\s?){0,3}(re
| fwd?
| automat.*)\s?:.*'
    )
  )
  and (length(headers.references) > 0 or headers.in_reply_to is not null)
)
and (
  not profile.by_sender().solicited
  or (
    profile.by_sender().any_messages_malicious_or_spam
    and not profile.by_sender().any_messages_benign
  )
)

// 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
)