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A malvertising campaign has swamped most of the Netherlands’ most popular sites, affecting millions of users.
The campaign began to take root on Sunday, when security firm Fox-IT noted a spike in incidents involving malware exploit kits.
Spotted among those kits was the notorious Angler: the CaaS, or Crimeware-as-a-Service, that crooks have chosen to spread such nasties as the CryptoWall 4.0 ransomware.
As of Monday, at least 288 websites had been infected with malvertising, exposing millions to poisoned ads.
One example of how far its tentacles have reached: the campaign has hit Nu.nl, the most-visited Dutch-language news portal.
Nu.nl alone is estimated to have scored more than 50 million visitors in March, according to Tech Week Europe.
Other affected sites include eBay-style service Marktplaats.nl and well-known news and culture sites, according to Fox-IT.
A malvertising campaign has swamped most of the Netherlands’ most popular sites, affecting millions of users.
The campaign began to take root on Sunday, when security firm Fox-IT noted a spike in incidents involving malware exploit kits.
Spotted among those kits was the notorious Angler: the CaaS, or Crimeware-as-a-Service, that crooks have chosen to spread such nasties as the CryptoWall 4.0 ransomware.
As of Monday, at least 288 websites had been infected with malvertising, exposing millions to poisoned ads.
One example of how far its tentacles have reached: the campaign has hit Nu.nl, the most-visited Dutch-language news portal.
Nu.nl alone is estimated to have scored more than 50 million visitors in March, according to Tech Week Europe.
Other affected sites include eBay-style service Marktplaats.nl and well-known news and culture sites, according to Fox-IT.