一击断网。。。一国家通信网络大瘫痪。。。

Group 1 - A sudden network outage occurred in Luxembourg on July 23, 2025, affecting mobile networks, internet connections, fixed-line phones, and emergency alert systems [1][3] - The incident was initially classified as a "technical failure" but was later determined to be a "complex and targeted" cyber attack, revealing vulnerabilities in Luxembourg's digital infrastructure [3][8] - The outage began around 16:15 local time, originating from issues within POST Luxembourg's network systems [5] Group 2 - The outage impacted various services, including 4G/5G mobile communication, fixed and mobile phone services, emergency call services (112/113), electronic banking, government alert systems (LU-Alert), and all internet services for private and corporate clients [6] - The disruption lasted for several hours, causing significant chaos in social life and public safety, prompting the Luxembourg government to activate a national crisis response mechanism [7] - Initial investigations suggested that a new system configuration operation caused the 5G core network failure, which led to a cascading failure across multiple services [7] Group 3 - Following the restoration of services, the national cybersecurity agency and POST Luxembourg reported that the incident was a highly complex and unprecedented cyber attack aimed at disrupting national communication rather than data theft [8] - Investigators believe the attackers exploited vulnerabilities in standardized software used by POST Luxembourg to connect communication nodes, rather than directly attacking the hardware [10] - The national cybersecurity center has requested all government, banking, telecom, and energy companies using specific HW routers to report their system status and assist in security scans [11]