Banks and the national tax office in the Netherlands say they were briefly hit by a distributed denial of service cyber attack.
The national tax office in the Netherlands says its website briefly went offline because of a DDoS cyber attack, after the country's largest banks were targeted.
ABN Amro and ING on Monday said they were both targeted by hackers, temporarily disrupting online and mobile banking services over the weekend.
The tax office said it's website went down for five to 10 minutes after a DDos attack.
Rabobank also fell victim to an attack on Monday, while ABN Amro and ING
In Distributed Denial of Service (DDoS), attackers use computer networks they control to send such a large number of requests for information from websites that servers that host them can no longer handle the traffic and the sites become unreachable.