TLG Explains the Law · Criminal Procedure

Private Messages Can Become Evidence in Court

When digital evidence is obtained by private individuals, the constitutional exclusionary rule is not automatically triggered.

When digital evidence is obtained by private individuals, the constitutional exclusionary rule is not automatically triggered. The Supreme Court En Banc held that privately obtained Facebook Messenger messages and photographs may be admissible in court.

“The exclusionary rule is a shield against unlawful state action, not a blanket prohibition against evidence obtained by private individuals.”
— Lopez, J., En Banc

The Rule

The constitutional exclusionary rule generally applies to evidence obtained by the State or its agents in violation of the Constitution. It is not automatically applied to evidence obtained by private individuals.

What Did the Supreme Court Decide?

Privately obtained Facebook Messenger messages and photographs may be admissible in court, provided they are duly authenticated and relevant. The Court affirmed the conviction of the accused for violating Section 4(c)(2) of RA 10175, in relation to Sections 4(a), 3(b) and (c)(5) of RA 9775, for inducing a 14-year-old to send images of her private parts through Messenger.

In Simple Terms

Messages and photos that a private person obtains — not the police — can be used as evidence, as long as they are properly authenticated and relevant to the case.

Why Is This Important?

The decision recognizes the realities of digital communication. Messages, photos, and other electronically stored information privately obtained may be used as evidence, especially in cybercrime and online sexual exploitation cases, subject to proper authentication and the Rules on Evidence.

Practical Takeaway

Private messages can be evidence, but admissibility depends on the manner of acquisition, authentication, and compliance with the Rules on Evidence. The exclusionary rule does not automatically apply to evidence obtained by private individuals, but courts will still scrutinize its reliability, relevance, and regularity.

Case Citation

Christian Cadajas y Cabias v. People of the Philippines
G.R. No. 247348
November 16, 2021
En Banc
Lopez, J.

TLG Explains the Law infographic: Private Messages Can Become Evidence in Court
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How TLG Can Help

Whether you need to preserve messages as evidence or you are facing a case built on screenshots, how digital evidence is obtained and authenticated matters. Consult a TLG lawyer early.

Learn about our Criminal Litigation practice →

This post is for general information and educational purposes only. It does not constitute legal advice and should not be relied upon as a substitute for professional legal counsel. Every case depends on its own facts, evidence, and applicable law.

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