An online advertisement posted on a South Korean internet forum on February 25, 2026, offered for sale blueprints and 15 sets of mechanical components related to the Vulcano missile system. The posting, made under the online alias “Osori,” included a price and requested potential buyers to leave their contact information.
The advertisement appeared on a popular South Korean forum known for trading and selling various goods, including military-related items. Although the specific forum’s name has not been publicly released by authorities, it is known to host discussions on defense technology and equipment. The offering included what was described as detailed schematics and a substantial quantity of machine parts, suggesting a potentially significant compromise of sensitive military information.
South Korean defense officials confirmed the existence of the advertisement and initiated an investigation on February 26, 2026, to determine the authenticity of the offered materials and the identity of the seller. The Ministry of National Defense stated that a specialized team was formed to assess the potential security implications and to trace the origin of the components and blueprints. Initial assessments indicated the components appeared to be consistent with those used in the Vulcano precision-guided munition, a system co-developed by Italy and South Korea.
The Vulcano system, manufactured by Hanwha Defense, is a long-range guided artillery round designed to provide precision fire support. It is a key component of South Korea’s defense strategy, particularly in light of ongoing tensions with North Korea. The system’s development involved significant technology transfer from Italy’s Leonardo company, raising concerns about potential implications for both nations if the advertised materials prove genuine.
Italian defense officials have been briefed on the situation and are cooperating with the South Korean investigation. Leonardo has not yet issued a public statement, but sources within the company indicated they are conducting an internal review to assess any potential vulnerabilities related to the technology transfer agreement. The Italian Ministry of Defence has requested a full report from Leonardo regarding the security protocols surrounding the Vulcano technology.
The South Korean investigation is focusing on several key areas, including identifying how the blueprints and components may have been obtained, whether the seller had authorized access to the materials, and the potential intent behind the advertisement. Authorities are also examining the possibility of insider involvement or a deliberate attempt to compromise South Korea’s defense capabilities. Cybersecurity experts are analyzing the forum’s server logs to identify the IP address and other identifying information associated with the “Osori” account.
As of March 1, 2026, the advertisement had been removed from the forum, and the “Osori” account appears to have been deactivated. South Korean authorities have not released any information regarding potential suspects or arrests. The Ministry of National Defense has declined to comment on the specifics of the investigation, citing national security concerns. The investigation remains ongoing, with no public timeline for its completion.