Indonesia Security Report — June 25, 2026

Security analysis based on open-source intelligence and web research. Period: June 18 — June 25, 2026.

Executive Summary

Indonesia experienced a dynamic security landscape between June 18 and June 25, 2026, marked by significant diplomatic engagements, a major cybersecurity incident, and continued readiness for international peacekeeping. Diplomatically, Indonesia strengthened ties with Russia through an ASEAN summit and a new legal cooperation agreement, while also welcoming a US-Iran peace deal and offering mediation in the Middle East. A critical "FortiBleed" cybersecurity vulnerability exposed credentials of numerous Indonesian government and private institutions, highlighting severe digital threats. Concurrently, Indonesia maintained its readiness to deploy up to 8,000 troops for a humanitarian mission in Gaza, underscoring its commitment to global stability. Maritime security in the North Natuna Sea remained a focus due to suspected foreign fishing vessel activities.

Key Security Developments

• Diplomatic Engagement with Russia and ASEAN
  On June 18, 2026, Indonesian Foreign Minister Sugiono led a delegation to the ASEAN-Russia Summit in Kazan, Russia, advocating for expanded cooperation in economy, food security, and energy resilience. Sugiono emphasized the importance of diversifying external partnerships to enhance regional resilience and stability, independent of bloc politics. This engagement signals Indonesia's strategic balancing act in a volatile geopolitical environment.
• Exploration of Russian Nuclear Technology and Oil Imports
  During the ASEAN-Russia Summit on June 18, 2026, Indonesia's Foreign Minister Sugiono also encouraged cooperation with Russia on nuclear technology development to achieve national energy self-sufficiency. Furthermore, Indonesia is exploring plans to develop floating nuclear power plants with Russia's Rosatom and intends to import 150 million barrels of crude oil from Russia by the end of 2026 to bolster national energy reserves amidst global supply chain disruptions.
• US-Iran Peace Agreement Welcomed and Mediation Offered
  Indonesia welcomed the reported peace agreement between the United States and Iran, urging immediate regional de-escalation and a return to stability. On June 15, 2026, the Indonesian Ministry of Foreign Affairs expressed hopes that the deal would foster a peaceful settlement of conflict, with President Prabowo Subianto offering to facilitate dialogue and even travel to Tehran for mediation if both parties agreed.
• Readiness for Gaza Peacekeeping Mission
  Indonesia's military announced that up to 8,000 troops could be ready by the end of June 2026 for a potential humanitarian and peacekeeping mission in Gaza, as part of US President Donald Trump's postwar reconstruction plan. Army spokesperson Brig. Gen. Donny Pramono clarified that this readiness is contingent on a final political decision and international mechanisms, with the mission strictly humanitarian, focusing on civilian protection, medical services, and reconstruction, not combat operations.
• Critical FortiGate Cybersecurity Leak ("FortiBleed")
  On June 24, 2026, reports emerged of a massive leakage of network security credentials from Fortinet devices, dubbed "FortiBleed," threatening hundreds of organizations across Indonesia. Cybersecurity experts confirmed that at least 50 FortiGate user institutions in Indonesia, including state-owned enterprises like iconPLN and Telkom, the Ministry of Manpower, e-commerce platforms, and commercial banks, have been affected by this severe data exposure.
• Ongoing Cybersecurity System Strengthening
  Indonesia continues to strengthen its national cybersecurity system in response to a significant increase in cyberattacks. The National Cyber and Crypto Agency (BSSN) reported 5.5 billion cyberattacks in 2025, a 714% increase from the 2020-2024 annual average, with another 1.52 billion attacks tracked in the first three and a half months of 2026. The government is also deliberating a Cybersecurity and Cyber Resilience (KKS) Bill, with three sessions scheduled before July 2026.
• Maritime Security in North Natuna Sea
  On June 10, 2026, Natuna's local government and the Indonesian Navy strengthened coordination to safeguard fishermen in the North Natuna Sea following reports of suspected foreign fishing vessels operating approximately 40 nautical miles from Indonesia's outermost islands. This area borders Malaysia and Vietnam and is a sensitive zone due to ongoing South China Sea disputes.
• Legal Cooperation Agreement with Russia
  Indonesia and Russia formalized a new agreement on the exchange of legal information in Saint Petersburg on June 24, 2026. Signed by Indonesian Minister of Law Supratman Andi Agtas and Russian Prosecutor General Aleksandr V. Gutsan, this accord is a practical extension of a Mutual Legal Assistance (MLA) treaty signed six years prior, aiming to enhance cooperation in combating transnational crime.
• Defense Budget Increase and Modernization Efforts
  Indonesia's defense budget for 2026 is estimated at Rp185 trillion, an increase from approximately Rp166 trillion in 2025. This allocation is aimed at strengthening capabilities and supporting long-term modernization targets, including the maintenance of warships, naval vessels, launcher systems, and combat and tactical vehicles.
• Acquisition of M-346F Light Combat Aircraft
  Indonesia is set to sign a contract in early July 2026 for the acquisition of 12 M-346F light combat and pilot training aircraft from Leonardo and PT E-Systems Solutions, with deliveries expected by early 2028. This is part of a broader plan to acquire 36 M346Fs, enhancing the Indonesian Air Force's capabilities.

Geopolitical Impact and Regional Dynamics

Indonesia's diplomatic activities during this period reflect a continued commitment to its "free and active" foreign policy, navigating complex global power dynamics. The active participation in the ASEAN-Russia Summit and the push for deeper economic and energy cooperation with Moscow, including exploring nuclear technology and oil imports, signals Indonesia's intent to diversify its partnerships and reduce reliance on traditional Western allies. This approach aims to bolster regional resilience against global volatility, particularly concerning supply chain disruptions and energy security.

The welcoming of the US-Iran peace agreement and President Prabowo Subianto's offer to mediate underscore Indonesia's aspiration to play a constructive role in de-escalating Middle East conflicts. This diplomatic initiative aligns with Indonesia's long-standing support for peace and stability, particularly in regions affecting global energy markets and humanitarian concerns. The readiness to deploy troops to Gaza, while strictly humanitarian, positions Indonesia as a key contributor to international stabilization efforts under the US-backed plan, further elevating its profile on the global stage.

Regionally, Indonesia's ongoing efforts to strengthen maritime security in the North Natuna Sea, including coordinating with local governments and the Navy against suspected foreign fishing vessels, highlight persistent challenges in the South China Sea. While Indonesia maintains it has no overlapping claims with China, Beijing's "nine-dash line" continues to be a point of contention, necessitating vigilance and robust maritime patrols. The broader geopolitical landscape, marked by the US-China rivalry and the impact of the Iran-Gulf war on critical chokepoints like the Strait of Hormuz, continues to influence Indonesia's strategic choices, pushing it towards strengthening its defense capabilities and seeking diverse security and economic partners.

Military and Defense Analysis

Indonesia's military and defense posture is characterized by a sustained drive towards modernization and capability enhancement, supported by an increasing defense budget. The estimated Rp185 trillion defense budget for 2026, up from Rp166 trillion in 2025, reflects the government's commitment to strengthening its armed forces. This funding is crucial for maintaining existing assets, including warships and combat vehicles, and for acquiring new platforms.

A significant development in air power modernization is the planned acquisition of 36 M-346F light combat and pilot training aircraft from Italy, with a contract for the first 12 expected in early July 2026. These aircraft are intended to replace aging BAE Systems Hawk Mk 109/209s and will be more capable than some of Indonesia's existing F-16s, integrating indigenous self-protection jammers and advanced missiles. This acquisition, alongside the earlier handover of six French-made Rafale jets in May 2026, demonstrates Indonesia's multi-source procurement strategy to build a deterrent force amidst regional uncertainties. The Indonesian National Armed Forces (TNI) also showcased its readiness to deploy up to 8,000 troops for a humanitarian mission in Gaza by the end of June 2026, indicating a robust logistical and operational capacity for international engagements.

Outlook and Forecast

Short-term trends (1-3 months): In the immediate future, Indonesia will likely continue its diplomatic balancing act, particularly in the context of the US-China rivalry and its relations with Russia. The formal signing of the M-346F aircraft contract in early July 2026 will be a key event in defense modernization. The ongoing deliberation of the Cybersecurity and Cyber Resilience (KKS) Bill in parliament, with sessions scheduled before July, suggests a legislative push to address the severe cybersecurity vulnerabilities exposed by incidents like "FortiBleed." The readiness of Indonesian troops for Gaza deployment by the end of June 2026 will transition into a waiting period for a final political decision, with logistical preparations likely continuing.

Critical flashpoints and risk areas: The primary risk area remains cybersecurity, given the widespread impact of the "FortiBleed" vulnerability on critical government and private institutions. The potential for further exploitation of these compromised credentials poses a significant threat to national infrastructure and data integrity. The North Natuna Sea will remain a flashpoint for maritime security, with continued vigilance required against foreign fishing vessel incursions and potential escalations in South China Sea disputes. While the US-Iran peace deal is a positive development, the broader Middle East situation and its impact on global energy markets, particularly the Strait of Hormuz, will continue to be a concern for Indonesia's energy security.

Indicators to monitor: Key indicators to monitor include the progress and implementation of the Cybersecurity and Cyber Resilience Bill, the effectiveness of measures taken to mitigate the "FortiBleed" vulnerability, and any new reports of cyberattacks targeting critical infrastructure. In the maritime domain, monitoring the frequency and nature of foreign vessel sightings in the North Natuna Sea and developments in the South China Sea Code of Conduct negotiations will be crucial. On the diplomatic front, observing the follow-through on the proposed Gaza deployment and the trajectory of Indonesia's energy cooperation with Russia will provide insights into its strategic alignments.

Strategic recommendations: Indonesia should prioritize a rapid and comprehensive response to the "FortiBleed" cybersecurity incident, including mandatory security audits for affected institutions and enhanced threat intelligence sharing. Accelerating the passage and implementation of the Cybersecurity and Cyber Resilience Bill is paramount. In the North Natuna Sea, Indonesia should continue to strengthen its maritime surveillance and enforcement capabilities, potentially through increased patrols and regional cooperation, while maintaining a clear and consistent diplomatic stance on its sovereign rights. Furthermore, Indonesia should leverage its diplomatic momentum from the US-Iran peace deal to actively promote de-escalation and dialogue in other regional conflicts, reinforcing its role as a constructive middle power.

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