Brand Impersonation: Stripe

type.inbound
and (
  // Display name after replacing unicode confusables is stripe
  (
    sender.display_name =~ 'stripe'
    or (
        strings.istarts_with(sender.display_name, 'stripe ')
        and not sender.display_name in~ ('Stripe & Stare', 'Stripe and Stare', 'Stripe Events')
    )
    or strings.replace_confusables(sender.display_name) =~ 'stripe'
  )
  or (
    // the edit distance is 1 or 2
    strings.ilevenshtein(strings.replace_confusables(sender.display_name),
                         'stripe'
    ) <= 2
    // the length is the same as "stripe"
    and length(sender.display_name) == 6
    // and not one of these english words that matches the edit distance
    and not sender.display_name in~ (
      "strive",
      "stride",
      "strife",
      "strike",
      "strobe",
      "stroke",
      "streps",
      "string",
      "scribe",
      "straye", // a shoe company?
      "storie", // storiesbystorie.com
      "stryke", // a cybersecurity and compliance company
      "stryve", // a food/snack company stryve.com
      "shrine", // common word
      "s.ride", // cab/taxi company
      "striim", // ai/data company
      "striim.com" // same as above
    )
  )
)
and sender.email.domain.root_domain not in~ ('stripe.com')
and sender.email.email not in $recipient_emails

// Stripe adds a custom header
// don't match messages with the header
and not any(headers.hops, any(.fields, .name == "X-Stripe-EID"))

// 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
)