One in five companies in the Netherlands faces ongoing cyberattacks, experts warn. PVO Limburg's Jeroen Duijsens says the threat grows stronger every single day.

Criminals often gather leaked personal data and check usability using automated systems.

Albert Heijn's troubles may have stemmed from a single employee's compromised data. Outdated passwords and excessive access rights remain common weaknesses in many attacks.

One careless receptionist with universal access could expose an entire company's information. Many offenders chase money, while some hackers want to provoke social unrest.