**Cisco disclosed that Chinese hackers are exploiting its customers via a new zero-day vulnerability, marking a critical cybersecurity threat with widespread potential impact on enterprise networks.[1][6]**

This development heightens global concerns over nation-state cyber operations, amid reports of accelerating threats from criminal groups and supply chains, as noted in recent U.S. government cybersecurity updates.[6]

References:
1. https://www.techradar.com/news/archive
2. https://www.styletech.net/post/top-news-in-tech-december-2025
3. https://techstartups.com/2025/12/23/top-tech-news-today-december-23-2025/
4. https://techcrunch.com/2025/12/22/tech-layoffs-2025-list/
5. https://www.youtube.com/watch?v=rvvjMTqq9tQ
6. https://cimetrics.com/december-2025-cybersecurity-news/
7. https://spring.io/blog/2025/12/30/this-year-in-spring-december-30th-2025
8. https://www.alm.com/press_release/alm-intelligence-updates-verdictsearch/?s-news-22919933-2025-12-18-major-tech-crisis-sparks-market-collapse-and-government-intervention-in-2025