Washington D.C., December 11, 2024 –The U.S. charges Chinese hacker Guan Tianfeng for the Sophos firewall exploit targeting 81,000 devices, linking the attack to state-backed cyber espionage.
The U.S. government has unmasked a major cybersecurity threat, charging Chinese national Guan Tianfeng for his role in the 2020 Sophos firewall breach. Guan, known by his alias GbigMao,” allegedly exploited a critical zero-day vulnerability (CVE-2020-12271) to infiltrate over 81,000 firewalls globally, including 23,000 in the U.S.
The breach targeted critical infrastructure and sensitive networks, with malware designed to steal firewall data and user credentials. U.S. authorities revealed that Guan’s actions were linked to Sichuan Silence Information Technology, a Chinese company reportedly tied to state intelligence.
FBI Cybercrime Unit Chief Lisa Evans stated:
This is a blatant attack on global cybersecurity, underscoring the relentless tactics of nation-state actors.
The exploitation began just a day after Guan’s associates suspiciously reported the vulnerability to Sophos. Using fake domains resembling legitimate Sophos sites, hackers deployed the Asnarök trojan and even attempted to spread the devastating Ragnarok ransomware.
Ross McKerchar, Chief Information Security Officer at Sophos said:
This breach is a wake-up call for the industry. Collaboration and early transparency are critical to outpacing these threats.
In a bold move, the U.S. Department of State has offered a $10 million reward for information leading to Guan’s capture or identifying others involved in cyberattacks against U.S. infrastructure.
The breach’s potential impact was severe, with 36 firewalls protecting critical U.S. systems. Experts warn that failure to address vulnerabilities could lead to catastrophic consequences.
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