• Sublime Core Feed
Medium Severity

Link: Non-standard port 8443 in display URL

Description

Detects links containing port 8443 in the display URL, which may indicate suspicious redirect or hosting infrastructure.

References

No references.

Sublime Security
Created Mar 26th, 2026 • Last updated Mar 26th, 2026
Source
type.inbound
and (
  // no previous threads
  length(body.previous_threads) == 0
  // or is a fake thread
  or (
    (length(headers.references) == 0 or headers.in_reply_to is null)
    and (
      subject.is_reply
      or subject.is_forward
      or length(body.previous_threads) > 0
    )
  )
)
and any(body.links,
        strings.contains(.display_url.url, ':8443')
        and network.whois(.href_url.domain).days_old <= 365
)

// Negate noreply-spamdigest senders
and not (
  sender.email.email == "noreply-spamdigest@google.com"
  and headers.auth_summary.dmarc.pass
)
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