Breach at US-based cybersecurity provider F5 blamed on China, sources say

By AJ Vicens and Raphael Satter (Reuters) -A breach at U.S.-based cybersecurity company F5 has been blamed on state-backed hackers from China, two people briefed on the investigation said Thursday. On Wednesday, U.S. government officials said federal networks are being targeted by an unidentified "nation-state cyber threat actor" that's trying to exploit vulnerabilities in products made by F5. The company and the Chinese embassy in Washington did not respond to Reuters' requests for comment. The U.S. Cybersecurity and Infrastructure Security Agency (CISA), when contacted by Reuters, did not confirm whether the breach was carried out by Chinese state-backed hackers. "These same risks extend to any organization using this technology, potentially leading to a catastrophic compromise of critical information systems," CISA Acting Director Madhu Gottumukkala said in a statement, without specifying who was behind the hack. The two people briefed on the investigation said the hackers were inside F5's network for more than a year.  (Reporting by Raphael Satter and AJ Vicens. Devika Nair, Gnaneshwar Rajan, and Nilutpal Timsina provided additional reporting; Editing by Sumana Nandy, Rashmi Aich and Franklin Paul)

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