The FBI has issued a warning about Russian hackers targeting U.S. critical infrastructure by exploiting old Cisco devices.
The attacks were discovered in partnership with Cisco Talos and are linked to a cyber unit inside Russia’s FSB security service.
According to investigators, the hackers used a seven-year-old vulnerability in outdated Cisco IOS systems. By exploiting these unpatched devices, they were able to steal configuration files and even change settings to maintain long-term access.
The campaign is not limited to the United States. Similar attacks have been detected in North America, Europe, Asia, and Africa, with targets in telecommunications, universities, and manufacturing sectors. The FBI says the hackers are focusing on organizations important to Russian strategic interests.
This same FSB-linked group was previously accused of attacking the global energy sector. U.S. officials warn that organizations still running old and unsupported Cisco devices should patch or replace them immediately to reduce the risk of compromise.
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