High Severity

Brand impersonation: QuickBooks dispute notification

Description

Detects messages impersonating QuickBooks or Intuit that reference dispute notifications or resolutions, but originate from unauthorized domains that fail DMARC authentication.

References

No references.

Sublime Security
Created Jun 10th, 2026 • Last updated Jun 10th, 2026
Source
type.inbound
and any([subject.base, sender.display_name],
        strings.icontains(., 'Quickbooks', 'Intuit')
)
and any([subject.base, sender.display_name, body.current_thread.text],
        regex.icontains(., 'Dispute\s+(?:Notification|Resolution)')
)
and not (
  sender.email.domain.root_domain in~ (
    'intuit.com',
    'turbotax.com',
    'intuit.ca',
    'meliopayments.com',
    'qemailserver.com',
    'intuit.co.uk',
    'quickbooksonline.com',
    'tsheets.com'
  )
  and coalesce(headers.auth_summary.dmarc.pass, false)
)
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