Note

The June 2026 Dark Web Breach Incident Trend Report is based on major data breach cases posted on the deep web and dark web forums. Due to the nature of some sources, it was difficult to fully verify the accuracy of certain information, so the report includes content that requires further verification.

Major Issue

• ShinyHunters claimed to have carried out a series of data breaches targeting companies and organizations across various sectors in North America and Europe, including healthcare, security, fashion, media, retail, and international organizations.
• In the Saudi Arabian Region, data breaches were observed across various private and public platforms—including hospitals, logistics, job recruitment, delivery, mobility, and charitable foundations—and related data was sold or shared.
• In the Middle East, concerns were raised that the response layer of an AI assistant platform at a large commercial facility could be manipulated, highlighting a new threat vector for AI-based customer service platforms.
• Through Operation FortiBleed, large-scale leaks of access credentials for security equipment and VPN accounts were reported.
• In the government and military sectors, data and SSH access credentials from government agencies, election management bodies, and military-related organizations in the Middle East, South America, Africa, and Asia were traded on dark web forums.
• In the financial sector, data or account access credentials related to banks, financial services companies, and investment and insurance institutions in North America, Europe, the Middle East, and Asia were sold or shared.
• In South Korea, evidence of data breaches targeting organizations across various sectors—including healthcare, education, and IT services—was confirmed, along with defense-related documents. However, sample analysis revealed that some posts claiming to contain subscriber information from Korean telecommunications companies and customer information from e-commerce platforms were actually fake data generated by AI, and some posts related to e-commerce and lodging reservations were found to be reposts of older content.
• In Taiwan and Japan, evidence of data breaches or the trading of account access credentials related to manufacturers, financial institutions, universities, and online booking services was observed.
• In Central and South America, numerous instances of data breaches targeting financial intelligence units, local governments, public institutions in the health, education, and defense sectors, and law enforcement agencies were confirmed.
• On Russian-language forums, advertisements for services that act as intermediaries in contacting and negotiating with ransomware victims were identified, and claims of selling information packages related to North Korea-linked threat actors and stealth browser malware were also observed.

Conclusion

The June 2026 dark web breach trends were characterized by claims of consecutive data breaches targeting multinational corporations, indications of breaches against private and public platforms in the Middle East, the large-scale distribution of access credentials for security equipment and remote access accounts, and widespread claims of data breaches that target government, military, and financial sectors. In Korea as well, indications of data breaches targeting various institutions and companies were observed; however, some posts were confirmed to be AI-generated false data or reposts of older content, reaffirming the importance of verifying the authenticity of leaked information. Furthermore, the dark web ecosystem is expanding its scope beyond data trading to include ransomware negotiation brokerage services and the exploitation of AI platforms; with the increasing distribution of fabricated data using generative AI, verifying the reliability of breach information is expected to become even more critical in the future.