Legal Notice No. 065/SOMASI/RW/IX/2026: Gatot Gunarso (English Edition)

This post summarises Somasi No. 065/SOMASI/RW/IX/2026, a formal legal notice I issued on 20 September 2026 in South Jakarta to Gatot Gunarso, who lists himself as a PhD student at Beihang University in Beijing. It is a demand letter and an accompanying ethics report, not a court finding. He has not responded in this post, and I do not assert that he is guilty of any offence.

What the notice complains about

Two things, as I documented them:

1. A Threads reply on 20 September 2026 from the account @gatotgunarso123, under a post by another person that discussed my own account. Rendered into English, it reads: "He is a lunatic, he was arrogant, challenged people and tried to extort several people in the AI practitioners' group, even claiming he could bring the House of Representatives (DPR) and the Police to prosecute in Taiwan. I challenged him and he went silent and spammed everywhere. He only has ChatGPT, a hacker-wannabe, script-kiddie style." The original is in Indonesian ("orgil", "kiddie script"). The post I saw had 818 likes and 196 replies.
2. A WhatsApp group message on 13 June 2026 in "KORIKA-IMPACT: Kesehatan," from an account named "孔明" that I attribute to him: "If he's a spammer, just kick him, sir," and later "Scammer and Spammer, we won't miss you." I was then removed from the group.

I state in the letter that I have never worked with him directly, so he has no first-hand basis for these statements. I deny extortion: Art. 482(1) of the new Criminal Code requires coercion by violence or threat of violence, and the chat evidence shows only that I said I could lodge a complaint with the DPR, which is a lawful complaint channel. He has not, to my knowledge, produced evidence for "extortion," "scammer" or "spamming."

I attribute both accounts to him on my own information. The letter invites him to deny ownership in writing, with evidence, before the deadline.

Who received copies, and why

• Hammam Riza, Chair of KORIKA, because part of the conduct occurred in a group within the organisation he leads;
• Beihang University (Graduate School, President's office and International Students Office), because his public profile says he is a doctoral student there;
• the Indonesian Embassy (KBRI) in Beijing, because we are both Indonesian citizens and the conduct occurred while he was resident in Beijing.

The copies were sent for information and any follow-up each recipient thinks appropriate within its own competence, without prejudging any court.

Legal basis I relied on

Indonesian law: Art. 433(2) (written defamation), Art. 434(1) (slander) and Art. 441(1) (one-third aggravation for information technology) of Law No. 1 of 2023, with Art. 436 as an alternative, and Civil Code Arts. 1365, 1372 and 1373. These are complaint offences (Art. 440). The letter also sets out, in Chinese characters and pinyin, Chinese law on defamation and insult, including Criminal Law Art. 246 (private prosecution) and civil remedies, and it applies Arts. 4(c) and 8 of the Indonesian Criminal Code to reach conduct abroad. I have no way to predict how any Chinese authority would treat it.

I calculated the damages from the Art. 434 maximum fine (IDR 200,000,000) plus one-third (IDR 266,666,667), doubled: IDR 533,333,334.

What I demanded

By Wednesday, 23 September 2026, 09:00 WIB (10:00 Beijing time), I asked him to:

1. Delete the Threads post and related WhatsApp messages, and all copies he had circulated;
2. Publish a public apology on @gatotgunarso123 and in the WhatsApp group, withdrawing the accusations of "extortion," "scammer," "spamming," "orgil" and "hacker-wannabe ala kiddie script," acknowledging he had no evidence and never worked with me;
3. Stop further statements attacking my honour;
4. Pay IDR 533,333,334;
5. Provide written evidence for his accusations, or a written denial that he owns the accounts.

What I said would follow

After the deadline I stated I would file a criminal complaint in Indonesia and a civil suit for an unlawful act, and deliver copies to Beihang University and KBRI Beijing. I also described, as a possible later stage, a summons and wanted-person listing, Interpol coordination, and an extradition request under the Indonesia–China treaty (signed 1 July 2009; ratified by Law No. 13 of 2017). In the letter I acknowledge that extradition is a last resort, subject to proportionality and to the assessment of both States, and that no outcome can be promised. Parallel routes in China (private prosecution and an academic disciplinary complaint) also remain open.

The Beihang ethics report

Alongside the notice I filed an ethics and student-conduct report (No. 066/PENGADUAN/RW/IX/2026) with Beihang University's graduate school, discipline inspection office and international school, copied to KBRI Beijing. It asks the university to register it, verify his enrolment and hear his response, remind him to comply with PRC law and university rules, recommend removal and a public correction, and keep my identity confidential as reporter. I noted that the university's academic-misconduct rules are directed at academic activities, so I asked it to decide which office is competent.

Limits of this record

• This is my account and my legal reading; no court or authority has made a finding.
• I attribute the Threads and WhatsApp accounts to him on my own information, and he may deny that.
• The damages figure is a demand, not an assessed loss.
• I am not a lawyer, and this post is not legal advice.

Right of reply and correction

Mr. Gatot Gunarso is invited to respond, correct, or add context. A substantive reply may be published alongside this article, edited only for privacy, safety and relevance. If reliable evidence shows any statement here is wrong, I will correct it and note the change.

This letter also exists in a bilingual English and Chinese edition: Legal Notice No. 065 (English + 中文).

#Somasi #Defamation #ITELaw #LegalNotice #AcademicIntegrity

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Rahmat Wibowo, Founder & CEO, InfraLoka — infraloka.co.id