BEC/Fraud: Job scam fake thread or plaintext pivot to freemail

type.inbound
and any(ml.nlu_classifier(body.current_thread.text).entities,
        .name in ("greeting", "salutation")
)

// most likely to occur in plain text
and (
  body.html.raw is null
  or 

  // HTML is not null but fake thread
  (subject.is_reply or subject.is_forward)
  and (
    (length(headers.references) == 0 and headers.in_reply_to is null)
    or not any(headers.hops, any(.fields, strings.ilike(.name, "In-Reply-To")))
  )
)
and (
  3 of (
    any([subject.subject, body.current_thread.text],
        regex.icontains(., '(full|part).time')
    ),
    strings.ilike(body.current_thread.text, '*job*'),
    regex.icontains(body.current_thread.text, '\bHR\b'),
    strings.ilike(body.current_thread.text, '*manager*'),
    strings.ilike(body.current_thread.text, '*commission*'),
    strings.ilike(body.current_thread.text, '*hourly*'),
    strings.ilike(body.current_thread.text, '*per hour*'),
    strings.ilike(body.current_thread.text, '*prior experience*'),
    strings.ilike(body.current_thread.text, '*company rep*'),
    strings.ilike(body.current_thread.text, "100% legal")
  )
  or (
    length(ml.nlu_classifier(body.current_thread.text).topics) == 1
    and any(ml.nlu_classifier(body.current_thread.text).topics,
            .name == "Professional and Career Development"
            and .confidence == "high"
    )
    and (
      length(recipients.to) == 0
      or all(recipients.to, strings.ilike(.display_name, "Undisclosed?recipients"))
    )
  )
)

// all attachments are images or there's no attachments
and (
  (
    length(attachments) > 0
    and all(attachments, .file_type in $file_types_images)
  )
  or length(attachments) == 0
)

// there's an email in the body and it's a freemail
and any(regex.extract(body.current_thread.text,
                      "[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}"
        ),
        strings.parse_email(.full_match).domain.domain in $free_email_providers
        or strings.parse_email(.full_match).domain.root_domain in $free_email_providers
)

// and that email doesn't match the sender domain
and (
  all(body.links, .href_url.domain.root_domain != sender.email.domain.domain)
  or sender.email.domain.root_domain in $free_email_providers
)
and (
  (
    not profile.by_sender().solicited
    and not profile.by_sender().any_messages_benign
  )
  or profile.by_sender().any_messages_malicious_or_spam
)
and not profile.by_sender().any_messages_benign