• Sublime Core Feed
Medium Severity

Impersonation: Legal firm with copyright infringement notice

Description

Detects messages impersonating legal firms or copyright enforcement entities with extensive legal terminology, threatening language, and urgent compliance demands.

References

No references.

Sublime Security
Created Mar 10th, 2026 • Last updated Mar 10th, 2026
Source
type.inbound
and length(body.previous_threads) == 0
and length(body.current_thread.text) < 5000
and 0 < length(body.links) < 10

// common strings in subject or base
and (
  2 of (
    strings.ilike(subject.base, '*Content*'),
    strings.ilike(subject.base, '*Compliance*'),
    strings.ilike(subject.base, '*Review*'),
    strings.ilike(subject.base, '*Legal*'),
    strings.ilike(subject.base, '*Formal*'),
    strings.ilike(subject.base, '*LLP*'),
    strings.ilike(subject.base, '*Unauthorized*'),
    strings.ilike(subject.base, '*Trademark*'),
    strings.ilike(subject.base, '*Law*'),
    strings.ilike(subject.base, '*Enforcement*'),
    strings.ilike(subject.base, '*Copyright*'),
    strings.ilike(subject.base, '*Violat*'),
    strings.ilike(subject.base, '*Intellectual*'),
    strings.ilike(subject.base, '*Concerning*'),
    strings.ilike(subject.base, '*Notice*'),
    strings.ilike(subject.base, '*Clarification*'),
    strings.ilike(subject.base, '*Matter*'),
    strings.ilike(sender.display_name, '*Content*'),
    strings.ilike(sender.display_name, '*Copyright*'),
    strings.ilike(sender.display_name, '*Review*'),
    strings.ilike(sender.display_name, '*Legal*'),
    strings.ilike(sender.display_name, '*Investigation*'),
    strings.ilike(sender.display_name, '*LLP*'),
    strings.ilike(sender.display_name, '*Law*'),
    strings.ilike(sender.display_name, '*Intellectual*'),
    strings.ilike(sender.display_name, '*Notice*'),
    strings.ilike(sender.display_name, '*Matter*')
  )
)

// common strings in email current thread
and 15 of (
  strings.ilike(body.current_thread.text, '*copyright*'),
  strings.ilike(body.current_thread.text, '*trademark*'),
  strings.ilike(body.current_thread.text, '*inquiry*'),
  strings.ilike(body.current_thread.text, '*online*'),
  strings.ilike(body.current_thread.text, '*authorized*'),
  strings.ilike(body.current_thread.text, '*legal*'),
  strings.ilike(body.current_thread.text, '*represent*'),
  strings.ilike(body.current_thread.text, '*lawful*'),
  strings.ilike(body.current_thread.text, '*owner*'),
  strings.ilike(body.current_thread.text, '*materials*'),
  strings.ilike(body.current_thread.text, '*protected*'),
  strings.ilike(body.current_thread.text, '*infring*'),
  strings.ilike(body.current_thread.text, '*immediate*'),
  strings.ilike(body.current_thread.text, '*cessation*'),
  strings.ilike(body.current_thread.text, '*content*'),
  strings.ilike(body.current_thread.text, '*referenced*'),
  strings.ilike(body.current_thread.text, '*17 U.S.C. §*'),
  strings.ilike(body.current_thread.text, '*constitutes*'),
  strings.ilike(body.current_thread.text, '*authorization*'),
  strings.ilike(body.current_thread.text, '*removal*'),
  strings.ilike(body.current_thread.text, '*comply*'),
  strings.ilike(body.current_thread.text, '*failure*'),
  strings.ilike(body.current_thread.text, '*law firm*'),
  strings.ilike(body.current_thread.text, '*LLP*'),
  strings.ilike(body.current_thread.text, '*compliance*'),
  strings.ilike(body.current_thread.text, '*cease*'),
  strings.ilike(body.current_thread.text, '*protect*'),
  strings.ilike(body.current_thread.text, '*rights*'),
  strings.ilike(body.current_thread.text, '*penalty*'),
  strings.ilike(body.current_thread.text, '*perjury*'),
  strings.ilike(body.current_thread.text, '*holder*'),
  strings.ilike(body.current_thread.text, '*declare*'),
  strings.ilike(body.current_thread.text, '*sworn*'),
  strings.ilike(body.current_thread.text, '*affidavit*'),
  strings.ilike(body.current_thread.text, '*investigation*'),
  strings.ilike(body.current_thread.text, '*identified*'),
  strings.ilike(body.current_thread.text, '*reproduction*'),
  strings.ilike(body.current_thread.text, '*license*'),
  strings.ilike(body.current_thread.text, '*granted*'),
  strings.ilike(body.current_thread.text, '*permitting*'),
  strings.ilike(body.current_thread.text, '*evidence*'),
  strings.ilike(body.current_thread.text, '*proceedings*'),
  strings.ilike(body.current_thread.text, '*evidentiary*'),
  strings.ilike(body.current_thread.text, '*remove*'),
  strings.ilike(body.current_thread.text, '*suspend*'),
  strings.ilike(body.current_thread.text, '*discontinue*'),
  strings.ilike(body.current_thread.text, '*72 hours*'),
  strings.ilike(body.current_thread.text, '*48 hours*'),
  strings.ilike(body.current_thread.text, '*24 hours*'),
  strings.ilike(body.current_thread.text, '*proof*'),
  strings.ilike(body.current_thread.text, '*unresolved*'),
  strings.ilike(body.current_thread.text, '*accordance*'),
  strings.ilike(body.current_thread.text, '*procedures*'),
  strings.ilike(body.current_thread.text, '*interests*'),
  strings.ilike(body.current_thread.text, '*appeal*'),
  strings.ilike(body.current_thread.text, '*clarification*'),
  strings.ilike(body.current_thread.text, '*notice*')
)

// remove phrase from legitimate complaint
and not regex.icontains(body.current_thread.text,
                        '(?:we are passing the notice below|content has been removed|removed from our website|notice of intended action|I have not granted|I am the original creator|content you reported has been removed|complaint will be carefully reviewed|provide a list of violations|document confirming your right to act)'
)

// not copyright reports
and not regex.icontains(body.current_thread.text,
                        '(?:confirmation|received).{0,100}copyright report'
)

// verified dmca receiving/sending address
and not any([recipients.cc, recipients.to, recipients.bcc],
            any(.,
                .email.email in (
                  'dmca@vimeo.com',
                  'dmca@support.epicgames.com',
                  'takedowns@doppel.com',
                  'ipenforcement@epicgames.com'
                )
            )
)
and not strings.icontains(sender.email.domain.root_domain, 'edwinjamesip.com')
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