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Nation-state Hackers Breach Ribbon Communications' Network

🔒 In a filing with the SEC, Ribbon Communications disclosed that unauthorized actors, reportedly tied to a nation-state, had access to its IT network, with initial intrusion activity traced as far back as December 2024. The company detected the breach in September 2025, has worked to terminate access, and is collaborating with third-party cybersecurity experts and federal law enforcement. Ribbon says it has not yet found evidence of material corporate data theft, although attackers accessed customer files on two laptops outside the main network.