Rabobank became the third of the big Dutch banks to be targeted by a cyber attack in as many days on Monday morning when customers could not log into the co-op bank’s websites for banking services

The attack on Rabo fell hard on the heels of similar cyber attacks on rivals ABN Amro and ING over the weekend. The tax office also came under attack for a time on Monday morning.

Both ABN Amro and ING were back to normal on Monday morning after a weekend of cyber attacks which crippled the banks and left customers unable to make use of the banks’ internet banking, mobile banking and iDeal services.

A DDoS attack floods a website with a great deal of data traffic which overtaxes the server making it difficult or completely impossible to reach.