The Ministry of Justice and Security developed a behavioural intervention aimed at inspiring individuals to adopt safe cyber practices: 'Valse email? Meld het via de meldknop' (Fake email? Report it using the report button). Thanks to this behavioural intervention, employees are ten times more likely to report suspicious emails internally. Moreover, click rates on links in suspicious emails have significantly decreased.
This experiment is listed in the BINN report "A wealth of behavioural insights - 2023 edition". Further information on the trial and authors may be available elsewhere.