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Massive Breach Spills Credentials for Thousands of Sensitive Networks

Researchers say the leak contains valid passwords and login details for major companies, with attackers relying on reused credentials instead of a new flaw.

  • A newly discovered data leak dubbed "FortiBleed" has exposed credentials for 73,932 Fortinet firewall URLs across 194 countries, impacting 21,632 unique domains worldwide.
  • Unlike previous campaigns exploiting system vulnerabilities, this operation relies on brute-force tactics; a Russian-speaking threat group used a 45-GPU cluster to crack VPN authentication hashes and move laterally into Active Directory environments.
  • Major corporations including Samsung, Comcast, and Foxconn appear in the verified database, which spans nearly every major industry sector with the highest concentration of affected devices in India and the United States.
  • Cybercriminals successfully exfiltrated classified defense documents from a Turkish NATO defense contractor using the recovered credentials; Fortinet denied the attacks are fresh, claiming the data involves reshared information from previous incidents.
  • Because most compromised devices remain online, security experts urge organizations to immediately rotate all Fortinet VPN passwords and enforce multi-factor authentication to mitigate the substantial, ongoing risk to enterprise infrastructure.
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A large-scale cybercriminal campaign by FortiBleed exposed administrative and VPN credentials of at least 80,000 Fortinet firewalls distributed across various countries, reaching 21,632 corporate domains. The data were discovered by researcher Volodymyr Diachenko and analyzed by the intelligence firm Hudson Rock, which identified companies such as Samsung, Oracle, Foxconn, Siemens and Sony among the affected organizations. According to researche…

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BleepingComputer broke the news in New York, United States on Wednesday, June 17, 2026.
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