Grenoble-Alpes Métropole

The City of Grenoble experienced a cyber attack in May 2021 which resulted in interruption of Internet connections and associated communication devices.

The community's Internet access was temporarily stopped, leading to a stoppage of all the digital tools open to the outside.

As 60,000 computers converged on this attack, it really overloaded the flow and filled the available space, depriving the other machines of their connections.

Source: https://www.ledauphine.com/politique/2021/05/21/isere-metropole-de-grenoble-victime-d-une-cyberattaque-russe-la-seance-est-suspendue

"id": "GRE15514123",
"linkid": "grenoble-alpes-metropole",
"type": "Cyber Attack",
"date": "05/2021",
"severity": "60",
"impact": "2",
"explanation": "Attack limited on finance or reputation"