Description

Email contains Twitter shortened link (t.co) but does not originate from a Twitter domain. This is a known malicious and spam tactic.

References

No references.

Sublime Security
Created Mar 6th, 2024 • Last updated Sep 23rd, 2026
Source
type.inbound
and length(body.links) < 10
and any(body.links, .href_url.domain.root_domain == "t.co")
and sender.email.domain.domain not in~ (
  'twitter.com',
  'x.com',
  'twitter.discoursemail.com'
)
and (
  not profile.by_sender_email().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 not (
  sender.email.domain.root_domain in $high_trust_sender_root_domains
  and coalesce(headers.auth_summary.dmarc.pass, false)
)
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