Dutch government sites were brought offline for several hours by a massive DDoS attack. DDoS attacks against Dutch infrastructures have gone up 200 percent since 2011. The Netherlands is the sixth-fastest Internet connection in the world, which is probably one reason the attacks have become so devastating. The Dutch IT infrastructure was the target of other attacks last month that managed to stop access to key services such as tax payments and bills because the digital trust infrastructure had been taken offline. The attacks have targeted banks such as ING, ABN Amro and Rabobank, but also airline KLM.”]
Source: https://www.bitdefender.com/blog/hotforsecurity/dutch-government-websites-halted-by-cyber-attack/