Quick answer

Cyber libel is filed as a criminal complaint with the NBI Cybercrime Division or the PNP Anti-Cybercrime Group, or directly with the Office of the City or Provincial Prosecutor, through a sworn Complaint-Affidavit supported by preserved digital evidence. The critical deadline is one year from the date the offended party discovers the defamatory post — miss it, and the case is barred by prescription.

Cyber libel is ordinary libel — a public and malicious imputation of a crime, vice, or defect that dishonors or discredits a person — committed through a computer system, such as a Facebook post, a tweet, a blog article, or a message sent through an online platform. It is penalized under Section 4(c)(4) of the Cybercrime Prevention Act of 2012 (Republic Act No. 10175), in relation to Article 355 of the Revised Penal Code, which defines libel itself.

Because it is a criminal offense, cyber libel is prosecuted the same way most crimes are: through a complaint filed with investigators or directly with the prosecutor, followed by a preliminary investigation. Here is what that process actually involves.

Step 1: Preserve the Evidence Before You Do Anything Else

Digital evidence disappears or gets edited quickly, so this step comes first, even before deciding where to file:

Courts and prosecutors give more weight to evidence that is well-documented and, where possible, authenticated — for example, through a notarized affidavit describing exactly how and when the evidence was captured.

Step 2: Decide Where to File

You have essentially three options, and they are not mutually exclusive with getting legal advice first:

NBI Cybercrime Division

The NBI Cybercrime Division, based at the NBI main office in Manila, accepts walk-in complaints and also allows you to initiate a report or set an appointment online, though physical evidence submission and the execution of sworn statements are still done in person. At intake, an assigned agent interviews the complainant, helps complete the sworn complaint form, and prepares a request for authority to investigate before the matter is formally taken on. No fee is required to file a complaint.

PNP Anti-Cybercrime Group (ACG)

The PNP Anti-Cybercrime Group handles the same category of complaints and likewise accepts walk-in reports at its office, with online channels available for an initial report before you follow up in person.

Directly with the Prosecutor’s Office

You (through counsel) may also skip the investigative agencies and file the Complaint-Affidavit directly with the Office of the City or Provincial Prosecutor that has jurisdiction. This is common where the complainant already has a lawyer prepare the complaint and supporting evidence, since it can move straight into preliminary investigation.

Step 3: Prepare the Complaint-Affidavit

Whichever route you take, the centerpiece of the complaint is a sworn Complaint-Affidavit. It should lay out, in the complainant’s own words and under oath:

Attach your preserved screenshots, any witness affidavits, a valid ID, and (for a company complainant) proof of authority to file on the company’s behalf.

Step 4: Investigation and Preliminary Investigation

Once the complaint is lodged, the process generally runs like this:

The Deadline That Actually Decides Most Cases: Prescription

This is the point where many potential cyber libel complaints fail before they even reach a courtroom. For years there was real uncertainty over whether cyber libel prescribes in one year (like ordinary libel) or in a much longer period, with some rulings applying a 12- or 15-year window on the theory that cyber libel is a special-law offense carrying a higher penalty.

The Supreme Court, sitting en banc in the Causing ruling, resolved this decisively: cyber libel prescribes in one year, the same as libel under the Revised Penal Code, because RA 10175 did not create a new offense — it simply recognized a computer system as another means of committing the same crime of libel. The Court also clarified how that one year is counted: prescription runs from the date the offended party, the authorities, or their agents actually discover the libelous post, not automatically from the date it was published. Publishing something online does not, by itself, mean the offended party is presumed to have seen it right away.

In practical terms, this means:

What to Expect in Terms of Venue and Jurisdiction

Cyber libel cases fall under the jurisdiction of the Regional Trial Court, and RA 10175 extends jurisdiction to cover offenses where any element occurred in the Philippines, where a computer system located wholly or partly in the Philippines was used, or where the offense caused damage to a person who was in the Philippines at the time. Venue for libel-type offenses also follows specific rules tied to where the material was first accessed, printed, or where the offended party resided at the time — a lawyer can help pin down the correct venue for a particular set of facts, since filing in the wrong venue can delay or derail a case.

Criminal Liability Is Separate From Civil Liability

A criminal complaint for cyber libel is not the only remedy available to someone defamed online. Under Article 33 of the Civil Code, a person injured by defamation may also bring an independent civil action for damages, separate from the criminal case, and that civil action can proceed even while the criminal case is pending, since it only requires a preponderance of the evidence rather than proof beyond reasonable doubt. Some complainants pursue both a criminal complaint and a separate civil action, while others rely on the civil liability that can be awarded as part of the criminal case itself if the accused is convicted.

Cyber libel also generally carries a heavier penalty than ordinary libel committed offline. Section 6 of RA 10175 provides that offenses already punished under the Revised Penal Code, when committed through information and communications technology, are penalized one degree higher than the same offense committed without it — which is why cyber libel is treated as a more serious offense than libel published in a newspaper or spoken aloud, even though the underlying definition of libel is the same.

Practical Tips Before You File

Frequently Asked Questions

How long do I have to file a cyber libel complaint? One year from the date the offended party (or the authorities) actually discovers the defamatory post, per the Supreme Court's ruling in the Causing case. This is shorter than many people expect, so prompt action matters.

Do I need a lawyer to file a cyber libel complaint? It is not strictly required to get the process started with the NBI or PNP-ACG, but given the strict one-year deadline and technical elements of libel, having a lawyer review your evidence and draft the Complaint-Affidavit significantly improves the complaint's chances.

Is deleting the post a defense for the person being accused? No. Deleting a defamatory post does not erase criminal liability that already arose when it was published and seen by third parties, though it can affect the availability of evidence if the complainant did not preserve screenshots beforehand.

What is the difference between filing with the NBI and filing directly with the prosecutor? The NBI and PNP-ACG investigate first and then forward the case to the prosecutor with their findings, which can help build the evidentiary record; filing directly with the prosecutor skips that investigative step and moves straight to preliminary investigation, which is more common when the complainant already has a lawyer and a complete evidence package.

This commentary is for general informational purposes only and does not constitute legal advice. For guidance specific to your situation, please consult a licensed attorney.

If you have questions about your rights or options under Philippine law, our firm is available to assist. You may reach us via Viber or WhatsApp, call us at 0995 433 5550, or send an email to vivasnobles@gmail.com. We look forward to hearing from you.