National school students' organization LAKS was hit in a ransomware attack that left its exam complaint website off line from 4:00 p.m. on Thursday until Friday morning. According to the organization, they were infected by WannaCry, the ransomware that infected some 200 thousand computers in 150 countries last weekend, NU.nl reports.
During the first quarter of this year, two Dutch government institutions and a company in the energy sector were infected with ransomware, AD reports based on information obtained from the National Cyber Security Center (NCSC) by appealing to the freedom of information act. Ransomware is a type of malware that blocks access to files on an infected computer. The user can regain access to the files by paying a ransom, usually demanded in bitcoins.
The Dutch police are calling on all individuals and businesses to report any form of cyber attack on their computers, following a global ransomware attack that infected at least 200 thousand computers in 150 countries since Friday, including in the Netherlands, according to NU.nl. The virus infected computers through a months-old security leak in Windows, for which Microsoft already implemented an update.