When Does Cyber Libel Prescribe in the Philippines?

News hook: On April 8, 2026, the Supreme Court En Banc denied the final motions for reconsideration in G.R. No. 258524 (Causing v. People), definitively settling that a cyber libel complaint must be filed within one year of the complainant's actual discovery of the defamatory online post — not 12 years under Act No. 3326, and not 15 years under any afflictive-penalty theory.

Legal question

How long does a complainant have to file a cyber libel case under Republic Act No. 10175 (Cybercrime Prevention Act of 2012), and when does that period start to run?

Applicable laws and rules

Republic Act No. 10175 — Cybercrime Prevention Act of 2012, Section 4(c)(4): defines cyber libel as libel committed through a computer system
Revised Penal Code, Article 355 — Written Libel: the base offense incorporated by reference into RA 10175
Revised Penal Code, Article 90 (as amended by Republic Act No. 4661, 1966): sets the prescriptive period for libel at one year
Revised Penal Code, Article 91: prescription runs from the day the crime is discovered by the offended party or the authorities
Act No. 3326 — Prescriptive Periods for Special Laws: the 12-year theory rejected by the Supreme Court in Causing v. People
G.R. No. 258524, Causing v. People: SC Third Division Decision of October 11, 2023, affirmed by En Banc on April 8, 2026

Why this matters

For more than a decade after RA 10175 took effect in 2012, courts applied inconsistent prescriptive periods to cyber libel — some relying on the 12-year period under Act No. 3326 (used in the 2020 Ressa/Rappler RTC conviction), others citing a 2018 Supreme Court resolution that suggested 15 years based on the afflictive-penalty argument. The uncertainty left accused persons exposed to prosecution long after an online post was made, and gave complainants a false sense that they could delay filing indefinitely. The April 2026 ruling closes that gap, creating a clear and uniform one-year window that dramatically changes litigation strategy on both sides of a cyber libel case.

The legal frame

The Supreme Court's core holding in Causing v. People rests on a straightforward classification principle: RA 10175 did not create a new and separate crime of cyber libel. Section 4(c)(4) of the Cybercrime Prevention Act simply recognizes the computer or internet as a new medium through which the pre-existing crime of libel under Articles 353 and 355 of the Revised Penal Code can be committed. Because cyber libel is the same offense as traditional libel — the only difference being the means of publication — the RPC's own prescriptive framework applies, not the residual framework for special laws under Act No. 3326.

Under Article 90 of the Revised Penal Code, as amended in 1966 by Republic Act No. 4661, the prescriptive period for libel and similar offenses is specifically set at one year. This is a lex specialis rule — a special prescription tailored to libel — and it prevails over the general 12-year period in Act No. 3326, which only applies when the special law creating the offense does not specify its own prescription. The Court also rejected the 15-year argument, which was based on the penalty RA 10175 Section 6 imposes on cyber libel (one degree higher than the RPC base, yielding a range of approximately prision correccional maximum to prision mayor minimum). Even if the elevated penalty classifies the offense under an "afflictive" category for some purposes, that classification does not override the specific one-year prescription that Article 90 attaches to libel by name.

The discovery rule under Article 91 of the Revised Penal Code governs when the one-year period starts. Prescription commences on the day the offended party, the authorities, or their agents actually discover the defamatory post. The Court explicitly rejected any theory of constructive notice based on internet publication alone — the mere act of posting something online does not mean the complainant is deemed to have discovered it immediately, because visibility depends on privacy settings, social network reach, and internet access. The one-year clock starts running only from the date of actual, personal discovery. In Causing v. People itself, the complainant stated he discovered the Facebook posts on the same dates they were published in February and April 2019; the criminal complaint was filed within a year of those dates and was therefore held to be timely filed.

What individuals should know

If you are the accused: Prescription is a complete defense that extinguishes criminal liability. If more than one year has passed between the date the complainant discovered the post and the date the complaint was filed, you may file a Motion to Quash on grounds of prescription at any stage of the proceedings. The burden shifts to the prosecution to prove the date of discovery was within the prescriptive period. Keep records that can establish when the post was made and when it was publicly accessible.

If you are the complainant: You must act quickly once you discover a defamatory online post. The one-year period runs from your actual date of discovery — the date you first saw or became aware of the post. Do not assume you have 12 or 15 years. Document the exact date you discovered the post (screenshots with timestamps, browser history, or witness accounts), preserve a copy of the post itself, and consult a lawyer immediately. Filing even a day after the one-year window closes may be fatal to the case.

On the Ressa/Rappler case: The Office of the Solicitor General filed a manifestation recommending acquittal in the Ressa/Santos case before the Supreme Court, directly citing the Causing ruling — which undermined the 12-year prescription theory that sustained the 2020 RTC conviction. That case illustrates how significantly the April 2026 ruling can affect pending proceedings.

On decriminalization: Senior Associate Justice Marvic Leonen's concurring opinion renewed calls to decriminalize libel against public figures, citing the chilling effect on free expression. Legislative bills to shift cyber libel to civil liability alone were pending in the 19th Congress as of the April 2026 ruling but had not been enacted.

Ask PHLaw.AI

Try: "Someone posted something defamatory about me on Facebook two years ago and I only saw it last month — can I still file a cyber libel case in the Philippines?"

Ask about this topic