Business Email Compromise (BEC) with request for mobile number

type.inbound
and length(body.current_thread.text) < 500
and length(attachments) == 0
and regex.icontains(body.current_thread.text,
                    '(?:mobile|contact|current|reliable).{0,10}(?:phone|number|#|\bno)|whatsapp|\bcell|personalcell|(?:share|what).{0,25}number.{0,15}(?:connect|reach|text|message|contact|call)|(?:\bdrop|which|send.{0,5}your|best).{0,25}(?:number|\bnum\b|#).{0,15}(?:(?:connect|reach|contact|call).{0,5}you|text|message|works?\b)|forward.{0,25}(?:\bnum\b|#)|get your.{0,25}(?:number|\bnum\b|#)'
)
and (
  any(ml.nlu_classifier(body.current_thread.text).intents,
      .name in ("bec", "advance_fee") and .confidence != "low"
  )
  or (
    // confidence can be low on very short bodies
    length(body.current_thread.text) < 550
    and (
      any(ml.nlu_classifier(body.current_thread.text).intents, .name == "bec")
      or any(ml.nlu_classifier(sender.display_name).intents, .name == "bec")
      or any(ml.nlu_classifier(body.current_thread.text).entities,
             strings.icontains(.text, "kindly")
      )
    )
  )
)
and (
  (
    (
      length(headers.references) > 0
      or not any(headers.hops,
                 any(.fields, strings.ilike(.name, "In-Reply-To"))
      )
    )
    and not (
      (
        strings.istarts_with(subject.subject, "RE:")
        or strings.istarts_with(subject.subject, "RES:")
        or strings.istarts_with(subject.subject, "R:")
        or strings.istarts_with(subject.subject, "ODG:")
        or strings.istarts_with(subject.subject, "答复:")
        or strings.istarts_with(subject.subject, "AW:")
        or strings.istarts_with(subject.subject, "TR:")
        or strings.istarts_with(subject.subject, "FWD:")
        or regex.imatch(subject.subject,
                        '(\[[^\]]+\]\s?){0,3}(re|fwd?|automat.*)\s?:.*'
        )
      )
    )
  )
  or length(headers.references) == 0
)
and (
  not profile.by_sender().solicited
  or profile.by_sender().any_messages_malicious_or_spam
)
and not profile.by_sender().any_messages_benign